Commit | Line | Data |
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8e87d142 | 1 | /* |
1da177e4 LT |
2 | BlueZ - Bluetooth protocol stack for Linux |
3 | Copyright (C) 2000-2001 Qualcomm Incorporated | |
590051de | 4 | Copyright (C) 2011 ProFUSION Embedded Systems |
1da177e4 LT |
5 | |
6 | Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com> | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License version 2 as | |
10 | published by the Free Software Foundation; | |
11 | ||
12 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS | |
13 | OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
14 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. | |
15 | IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY | |
8e87d142 YH |
16 | CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES |
17 | WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
18 | ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |
1da177e4 LT |
19 | OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
20 | ||
8e87d142 YH |
21 | ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, |
22 | COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS | |
1da177e4 LT |
23 | SOFTWARE IS DISCLAIMED. |
24 | */ | |
25 | ||
26 | /* Bluetooth HCI core. */ | |
27 | ||
8c520a59 | 28 | #include <linux/export.h> |
3df92b31 | 29 | #include <linux/idr.h> |
8c520a59 | 30 | #include <linux/rfkill.h> |
baf27f6e | 31 | #include <linux/debugfs.h> |
99780a7b | 32 | #include <linux/crypto.h> |
47219839 | 33 | #include <asm/unaligned.h> |
1da177e4 LT |
34 | |
35 | #include <net/bluetooth/bluetooth.h> | |
36 | #include <net/bluetooth/hci_core.h> | |
37 | ||
970c4e46 JH |
38 | #include "smp.h" |
39 | ||
b78752cc | 40 | static void hci_rx_work(struct work_struct *work); |
c347b765 | 41 | static void hci_cmd_work(struct work_struct *work); |
3eff45ea | 42 | static void hci_tx_work(struct work_struct *work); |
1da177e4 | 43 | |
1da177e4 LT |
44 | /* HCI device list */ |
45 | LIST_HEAD(hci_dev_list); | |
46 | DEFINE_RWLOCK(hci_dev_list_lock); | |
47 | ||
48 | /* HCI callback list */ | |
49 | LIST_HEAD(hci_cb_list); | |
50 | DEFINE_RWLOCK(hci_cb_list_lock); | |
51 | ||
3df92b31 SL |
52 | /* HCI ID Numbering */ |
53 | static DEFINE_IDA(hci_index_ida); | |
54 | ||
1da177e4 LT |
55 | /* ---- HCI notifications ---- */ |
56 | ||
6516455d | 57 | static void hci_notify(struct hci_dev *hdev, int event) |
1da177e4 | 58 | { |
040030ef | 59 | hci_sock_dev_event(hdev, event); |
1da177e4 LT |
60 | } |
61 | ||
baf27f6e MH |
62 | /* ---- HCI debugfs entries ---- */ |
63 | ||
4b4148e9 MH |
64 | static ssize_t dut_mode_read(struct file *file, char __user *user_buf, |
65 | size_t count, loff_t *ppos) | |
66 | { | |
67 | struct hci_dev *hdev = file->private_data; | |
68 | char buf[3]; | |
69 | ||
70 | buf[0] = test_bit(HCI_DUT_MODE, &hdev->dev_flags) ? 'Y': 'N'; | |
71 | buf[1] = '\n'; | |
72 | buf[2] = '\0'; | |
73 | return simple_read_from_buffer(user_buf, count, ppos, buf, 2); | |
74 | } | |
75 | ||
76 | static ssize_t dut_mode_write(struct file *file, const char __user *user_buf, | |
77 | size_t count, loff_t *ppos) | |
78 | { | |
79 | struct hci_dev *hdev = file->private_data; | |
80 | struct sk_buff *skb; | |
81 | char buf[32]; | |
82 | size_t buf_size = min(count, (sizeof(buf)-1)); | |
83 | bool enable; | |
84 | int err; | |
85 | ||
86 | if (!test_bit(HCI_UP, &hdev->flags)) | |
87 | return -ENETDOWN; | |
88 | ||
89 | if (copy_from_user(buf, user_buf, buf_size)) | |
90 | return -EFAULT; | |
91 | ||
92 | buf[buf_size] = '\0'; | |
93 | if (strtobool(buf, &enable)) | |
94 | return -EINVAL; | |
95 | ||
96 | if (enable == test_bit(HCI_DUT_MODE, &hdev->dev_flags)) | |
97 | return -EALREADY; | |
98 | ||
99 | hci_req_lock(hdev); | |
100 | if (enable) | |
101 | skb = __hci_cmd_sync(hdev, HCI_OP_ENABLE_DUT_MODE, 0, NULL, | |
102 | HCI_CMD_TIMEOUT); | |
103 | else | |
104 | skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, | |
105 | HCI_CMD_TIMEOUT); | |
106 | hci_req_unlock(hdev); | |
107 | ||
108 | if (IS_ERR(skb)) | |
109 | return PTR_ERR(skb); | |
110 | ||
111 | err = -bt_to_errno(skb->data[0]); | |
112 | kfree_skb(skb); | |
113 | ||
114 | if (err < 0) | |
115 | return err; | |
116 | ||
117 | change_bit(HCI_DUT_MODE, &hdev->dev_flags); | |
118 | ||
119 | return count; | |
120 | } | |
121 | ||
122 | static const struct file_operations dut_mode_fops = { | |
123 | .open = simple_open, | |
124 | .read = dut_mode_read, | |
125 | .write = dut_mode_write, | |
126 | .llseek = default_llseek, | |
127 | }; | |
128 | ||
dfb826a8 MH |
129 | static int features_show(struct seq_file *f, void *ptr) |
130 | { | |
131 | struct hci_dev *hdev = f->private; | |
132 | u8 p; | |
133 | ||
134 | hci_dev_lock(hdev); | |
135 | for (p = 0; p < HCI_MAX_PAGES && p <= hdev->max_page; p++) { | |
cfbb2b5b | 136 | seq_printf(f, "%2u: 0x%2.2x 0x%2.2x 0x%2.2x 0x%2.2x " |
dfb826a8 MH |
137 | "0x%2.2x 0x%2.2x 0x%2.2x 0x%2.2x\n", p, |
138 | hdev->features[p][0], hdev->features[p][1], | |
139 | hdev->features[p][2], hdev->features[p][3], | |
140 | hdev->features[p][4], hdev->features[p][5], | |
141 | hdev->features[p][6], hdev->features[p][7]); | |
142 | } | |
cfbb2b5b MH |
143 | if (lmp_le_capable(hdev)) |
144 | seq_printf(f, "LE: 0x%2.2x 0x%2.2x 0x%2.2x 0x%2.2x " | |
145 | "0x%2.2x 0x%2.2x 0x%2.2x 0x%2.2x\n", | |
146 | hdev->le_features[0], hdev->le_features[1], | |
147 | hdev->le_features[2], hdev->le_features[3], | |
148 | hdev->le_features[4], hdev->le_features[5], | |
149 | hdev->le_features[6], hdev->le_features[7]); | |
dfb826a8 MH |
150 | hci_dev_unlock(hdev); |
151 | ||
152 | return 0; | |
153 | } | |
154 | ||
155 | static int features_open(struct inode *inode, struct file *file) | |
156 | { | |
157 | return single_open(file, features_show, inode->i_private); | |
158 | } | |
159 | ||
160 | static const struct file_operations features_fops = { | |
161 | .open = features_open, | |
162 | .read = seq_read, | |
163 | .llseek = seq_lseek, | |
164 | .release = single_release, | |
165 | }; | |
166 | ||
70afe0b8 MH |
167 | static int blacklist_show(struct seq_file *f, void *p) |
168 | { | |
169 | struct hci_dev *hdev = f->private; | |
170 | struct bdaddr_list *b; | |
171 | ||
172 | hci_dev_lock(hdev); | |
173 | list_for_each_entry(b, &hdev->blacklist, list) | |
b25f0785 | 174 | seq_printf(f, "%pMR (type %u)\n", &b->bdaddr, b->bdaddr_type); |
70afe0b8 MH |
175 | hci_dev_unlock(hdev); |
176 | ||
177 | return 0; | |
178 | } | |
179 | ||
180 | static int blacklist_open(struct inode *inode, struct file *file) | |
181 | { | |
182 | return single_open(file, blacklist_show, inode->i_private); | |
183 | } | |
184 | ||
185 | static const struct file_operations blacklist_fops = { | |
186 | .open = blacklist_open, | |
187 | .read = seq_read, | |
188 | .llseek = seq_lseek, | |
189 | .release = single_release, | |
190 | }; | |
191 | ||
47219839 MH |
192 | static int uuids_show(struct seq_file *f, void *p) |
193 | { | |
194 | struct hci_dev *hdev = f->private; | |
195 | struct bt_uuid *uuid; | |
196 | ||
197 | hci_dev_lock(hdev); | |
198 | list_for_each_entry(uuid, &hdev->uuids, list) { | |
58f01aa9 MH |
199 | u8 i, val[16]; |
200 | ||
201 | /* The Bluetooth UUID values are stored in big endian, | |
202 | * but with reversed byte order. So convert them into | |
203 | * the right order for the %pUb modifier. | |
204 | */ | |
205 | for (i = 0; i < 16; i++) | |
206 | val[i] = uuid->uuid[15 - i]; | |
207 | ||
208 | seq_printf(f, "%pUb\n", val); | |
47219839 MH |
209 | } |
210 | hci_dev_unlock(hdev); | |
211 | ||
212 | return 0; | |
213 | } | |
214 | ||
215 | static int uuids_open(struct inode *inode, struct file *file) | |
216 | { | |
217 | return single_open(file, uuids_show, inode->i_private); | |
218 | } | |
219 | ||
220 | static const struct file_operations uuids_fops = { | |
221 | .open = uuids_open, | |
222 | .read = seq_read, | |
223 | .llseek = seq_lseek, | |
224 | .release = single_release, | |
225 | }; | |
226 | ||
baf27f6e MH |
227 | static int inquiry_cache_show(struct seq_file *f, void *p) |
228 | { | |
229 | struct hci_dev *hdev = f->private; | |
230 | struct discovery_state *cache = &hdev->discovery; | |
231 | struct inquiry_entry *e; | |
232 | ||
233 | hci_dev_lock(hdev); | |
234 | ||
235 | list_for_each_entry(e, &cache->all, all) { | |
236 | struct inquiry_data *data = &e->data; | |
237 | seq_printf(f, "%pMR %d %d %d 0x%.2x%.2x%.2x 0x%.4x %d %d %u\n", | |
238 | &data->bdaddr, | |
239 | data->pscan_rep_mode, data->pscan_period_mode, | |
240 | data->pscan_mode, data->dev_class[2], | |
241 | data->dev_class[1], data->dev_class[0], | |
242 | __le16_to_cpu(data->clock_offset), | |
243 | data->rssi, data->ssp_mode, e->timestamp); | |
244 | } | |
245 | ||
246 | hci_dev_unlock(hdev); | |
247 | ||
248 | return 0; | |
249 | } | |
250 | ||
251 | static int inquiry_cache_open(struct inode *inode, struct file *file) | |
252 | { | |
253 | return single_open(file, inquiry_cache_show, inode->i_private); | |
254 | } | |
255 | ||
256 | static const struct file_operations inquiry_cache_fops = { | |
257 | .open = inquiry_cache_open, | |
258 | .read = seq_read, | |
259 | .llseek = seq_lseek, | |
260 | .release = single_release, | |
261 | }; | |
262 | ||
02d08d15 MH |
263 | static int link_keys_show(struct seq_file *f, void *ptr) |
264 | { | |
265 | struct hci_dev *hdev = f->private; | |
266 | struct list_head *p, *n; | |
267 | ||
268 | hci_dev_lock(hdev); | |
269 | list_for_each_safe(p, n, &hdev->link_keys) { | |
270 | struct link_key *key = list_entry(p, struct link_key, list); | |
271 | seq_printf(f, "%pMR %u %*phN %u\n", &key->bdaddr, key->type, | |
272 | HCI_LINK_KEY_SIZE, key->val, key->pin_len); | |
273 | } | |
274 | hci_dev_unlock(hdev); | |
275 | ||
276 | return 0; | |
277 | } | |
278 | ||
279 | static int link_keys_open(struct inode *inode, struct file *file) | |
280 | { | |
281 | return single_open(file, link_keys_show, inode->i_private); | |
282 | } | |
283 | ||
284 | static const struct file_operations link_keys_fops = { | |
285 | .open = link_keys_open, | |
286 | .read = seq_read, | |
287 | .llseek = seq_lseek, | |
288 | .release = single_release, | |
289 | }; | |
290 | ||
babdbb3c MH |
291 | static int dev_class_show(struct seq_file *f, void *ptr) |
292 | { | |
293 | struct hci_dev *hdev = f->private; | |
294 | ||
295 | hci_dev_lock(hdev); | |
296 | seq_printf(f, "0x%.2x%.2x%.2x\n", hdev->dev_class[2], | |
297 | hdev->dev_class[1], hdev->dev_class[0]); | |
298 | hci_dev_unlock(hdev); | |
299 | ||
300 | return 0; | |
301 | } | |
302 | ||
303 | static int dev_class_open(struct inode *inode, struct file *file) | |
304 | { | |
305 | return single_open(file, dev_class_show, inode->i_private); | |
306 | } | |
307 | ||
308 | static const struct file_operations dev_class_fops = { | |
309 | .open = dev_class_open, | |
310 | .read = seq_read, | |
311 | .llseek = seq_lseek, | |
312 | .release = single_release, | |
313 | }; | |
314 | ||
041000b9 MH |
315 | static int voice_setting_get(void *data, u64 *val) |
316 | { | |
317 | struct hci_dev *hdev = data; | |
318 | ||
319 | hci_dev_lock(hdev); | |
320 | *val = hdev->voice_setting; | |
321 | hci_dev_unlock(hdev); | |
322 | ||
323 | return 0; | |
324 | } | |
325 | ||
326 | DEFINE_SIMPLE_ATTRIBUTE(voice_setting_fops, voice_setting_get, | |
327 | NULL, "0x%4.4llx\n"); | |
328 | ||
ebd1e33b MH |
329 | static int auto_accept_delay_set(void *data, u64 val) |
330 | { | |
331 | struct hci_dev *hdev = data; | |
332 | ||
333 | hci_dev_lock(hdev); | |
334 | hdev->auto_accept_delay = val; | |
335 | hci_dev_unlock(hdev); | |
336 | ||
337 | return 0; | |
338 | } | |
339 | ||
340 | static int auto_accept_delay_get(void *data, u64 *val) | |
341 | { | |
342 | struct hci_dev *hdev = data; | |
343 | ||
344 | hci_dev_lock(hdev); | |
345 | *val = hdev->auto_accept_delay; | |
346 | hci_dev_unlock(hdev); | |
347 | ||
348 | return 0; | |
349 | } | |
350 | ||
351 | DEFINE_SIMPLE_ATTRIBUTE(auto_accept_delay_fops, auto_accept_delay_get, | |
352 | auto_accept_delay_set, "%llu\n"); | |
353 | ||
06f5b778 MH |
354 | static int ssp_debug_mode_set(void *data, u64 val) |
355 | { | |
356 | struct hci_dev *hdev = data; | |
357 | struct sk_buff *skb; | |
358 | __u8 mode; | |
359 | int err; | |
360 | ||
361 | if (val != 0 && val != 1) | |
362 | return -EINVAL; | |
363 | ||
364 | if (!test_bit(HCI_UP, &hdev->flags)) | |
365 | return -ENETDOWN; | |
366 | ||
367 | hci_req_lock(hdev); | |
368 | mode = val; | |
369 | skb = __hci_cmd_sync(hdev, HCI_OP_WRITE_SSP_DEBUG_MODE, sizeof(mode), | |
370 | &mode, HCI_CMD_TIMEOUT); | |
371 | hci_req_unlock(hdev); | |
372 | ||
373 | if (IS_ERR(skb)) | |
374 | return PTR_ERR(skb); | |
375 | ||
376 | err = -bt_to_errno(skb->data[0]); | |
377 | kfree_skb(skb); | |
378 | ||
379 | if (err < 0) | |
380 | return err; | |
381 | ||
382 | hci_dev_lock(hdev); | |
383 | hdev->ssp_debug_mode = val; | |
384 | hci_dev_unlock(hdev); | |
385 | ||
386 | return 0; | |
387 | } | |
388 | ||
389 | static int ssp_debug_mode_get(void *data, u64 *val) | |
390 | { | |
391 | struct hci_dev *hdev = data; | |
392 | ||
393 | hci_dev_lock(hdev); | |
394 | *val = hdev->ssp_debug_mode; | |
395 | hci_dev_unlock(hdev); | |
396 | ||
397 | return 0; | |
398 | } | |
399 | ||
400 | DEFINE_SIMPLE_ATTRIBUTE(ssp_debug_mode_fops, ssp_debug_mode_get, | |
401 | ssp_debug_mode_set, "%llu\n"); | |
402 | ||
5afeac14 MH |
403 | static ssize_t force_sc_support_read(struct file *file, char __user *user_buf, |
404 | size_t count, loff_t *ppos) | |
405 | { | |
406 | struct hci_dev *hdev = file->private_data; | |
407 | char buf[3]; | |
408 | ||
409 | buf[0] = test_bit(HCI_FORCE_SC, &hdev->dev_flags) ? 'Y': 'N'; | |
410 | buf[1] = '\n'; | |
411 | buf[2] = '\0'; | |
412 | return simple_read_from_buffer(user_buf, count, ppos, buf, 2); | |
413 | } | |
414 | ||
415 | static ssize_t force_sc_support_write(struct file *file, | |
416 | const char __user *user_buf, | |
417 | size_t count, loff_t *ppos) | |
418 | { | |
419 | struct hci_dev *hdev = file->private_data; | |
420 | char buf[32]; | |
421 | size_t buf_size = min(count, (sizeof(buf)-1)); | |
422 | bool enable; | |
423 | ||
424 | if (test_bit(HCI_UP, &hdev->flags)) | |
425 | return -EBUSY; | |
426 | ||
427 | if (copy_from_user(buf, user_buf, buf_size)) | |
428 | return -EFAULT; | |
429 | ||
430 | buf[buf_size] = '\0'; | |
431 | if (strtobool(buf, &enable)) | |
432 | return -EINVAL; | |
433 | ||
434 | if (enable == test_bit(HCI_FORCE_SC, &hdev->dev_flags)) | |
435 | return -EALREADY; | |
436 | ||
437 | change_bit(HCI_FORCE_SC, &hdev->dev_flags); | |
438 | ||
439 | return count; | |
440 | } | |
441 | ||
442 | static const struct file_operations force_sc_support_fops = { | |
443 | .open = simple_open, | |
444 | .read = force_sc_support_read, | |
445 | .write = force_sc_support_write, | |
446 | .llseek = default_llseek, | |
447 | }; | |
448 | ||
134c2a89 MH |
449 | static ssize_t sc_only_mode_read(struct file *file, char __user *user_buf, |
450 | size_t count, loff_t *ppos) | |
451 | { | |
452 | struct hci_dev *hdev = file->private_data; | |
453 | char buf[3]; | |
454 | ||
455 | buf[0] = test_bit(HCI_SC_ONLY, &hdev->dev_flags) ? 'Y': 'N'; | |
456 | buf[1] = '\n'; | |
457 | buf[2] = '\0'; | |
458 | return simple_read_from_buffer(user_buf, count, ppos, buf, 2); | |
459 | } | |
460 | ||
461 | static const struct file_operations sc_only_mode_fops = { | |
462 | .open = simple_open, | |
463 | .read = sc_only_mode_read, | |
464 | .llseek = default_llseek, | |
465 | }; | |
466 | ||
2bfa3531 MH |
467 | static int idle_timeout_set(void *data, u64 val) |
468 | { | |
469 | struct hci_dev *hdev = data; | |
470 | ||
471 | if (val != 0 && (val < 500 || val > 3600000)) | |
472 | return -EINVAL; | |
473 | ||
474 | hci_dev_lock(hdev); | |
2be48b65 | 475 | hdev->idle_timeout = val; |
2bfa3531 MH |
476 | hci_dev_unlock(hdev); |
477 | ||
478 | return 0; | |
479 | } | |
480 | ||
481 | static int idle_timeout_get(void *data, u64 *val) | |
482 | { | |
483 | struct hci_dev *hdev = data; | |
484 | ||
485 | hci_dev_lock(hdev); | |
486 | *val = hdev->idle_timeout; | |
487 | hci_dev_unlock(hdev); | |
488 | ||
489 | return 0; | |
490 | } | |
491 | ||
492 | DEFINE_SIMPLE_ATTRIBUTE(idle_timeout_fops, idle_timeout_get, | |
493 | idle_timeout_set, "%llu\n"); | |
494 | ||
495 | static int sniff_min_interval_set(void *data, u64 val) | |
496 | { | |
497 | struct hci_dev *hdev = data; | |
498 | ||
499 | if (val == 0 || val % 2 || val > hdev->sniff_max_interval) | |
500 | return -EINVAL; | |
501 | ||
502 | hci_dev_lock(hdev); | |
2be48b65 | 503 | hdev->sniff_min_interval = val; |
2bfa3531 MH |
504 | hci_dev_unlock(hdev); |
505 | ||
506 | return 0; | |
507 | } | |
508 | ||
509 | static int sniff_min_interval_get(void *data, u64 *val) | |
510 | { | |
511 | struct hci_dev *hdev = data; | |
512 | ||
513 | hci_dev_lock(hdev); | |
514 | *val = hdev->sniff_min_interval; | |
515 | hci_dev_unlock(hdev); | |
516 | ||
517 | return 0; | |
518 | } | |
519 | ||
520 | DEFINE_SIMPLE_ATTRIBUTE(sniff_min_interval_fops, sniff_min_interval_get, | |
521 | sniff_min_interval_set, "%llu\n"); | |
522 | ||
523 | static int sniff_max_interval_set(void *data, u64 val) | |
524 | { | |
525 | struct hci_dev *hdev = data; | |
526 | ||
527 | if (val == 0 || val % 2 || val < hdev->sniff_min_interval) | |
528 | return -EINVAL; | |
529 | ||
530 | hci_dev_lock(hdev); | |
2be48b65 | 531 | hdev->sniff_max_interval = val; |
2bfa3531 MH |
532 | hci_dev_unlock(hdev); |
533 | ||
534 | return 0; | |
535 | } | |
536 | ||
537 | static int sniff_max_interval_get(void *data, u64 *val) | |
538 | { | |
539 | struct hci_dev *hdev = data; | |
540 | ||
541 | hci_dev_lock(hdev); | |
542 | *val = hdev->sniff_max_interval; | |
543 | hci_dev_unlock(hdev); | |
544 | ||
545 | return 0; | |
546 | } | |
547 | ||
548 | DEFINE_SIMPLE_ATTRIBUTE(sniff_max_interval_fops, sniff_max_interval_get, | |
549 | sniff_max_interval_set, "%llu\n"); | |
550 | ||
e7b8fc92 MH |
551 | static int static_address_show(struct seq_file *f, void *p) |
552 | { | |
553 | struct hci_dev *hdev = f->private; | |
554 | ||
555 | hci_dev_lock(hdev); | |
556 | seq_printf(f, "%pMR\n", &hdev->static_addr); | |
557 | hci_dev_unlock(hdev); | |
558 | ||
559 | return 0; | |
560 | } | |
561 | ||
562 | static int static_address_open(struct inode *inode, struct file *file) | |
563 | { | |
564 | return single_open(file, static_address_show, inode->i_private); | |
565 | } | |
566 | ||
567 | static const struct file_operations static_address_fops = { | |
568 | .open = static_address_open, | |
569 | .read = seq_read, | |
570 | .llseek = seq_lseek, | |
571 | .release = single_release, | |
572 | }; | |
573 | ||
92202185 MH |
574 | static int own_address_type_set(void *data, u64 val) |
575 | { | |
576 | struct hci_dev *hdev = data; | |
577 | ||
578 | if (val != 0 && val != 1) | |
579 | return -EINVAL; | |
580 | ||
581 | hci_dev_lock(hdev); | |
582 | hdev->own_addr_type = val; | |
583 | hci_dev_unlock(hdev); | |
584 | ||
585 | return 0; | |
586 | } | |
587 | ||
588 | static int own_address_type_get(void *data, u64 *val) | |
589 | { | |
590 | struct hci_dev *hdev = data; | |
591 | ||
592 | hci_dev_lock(hdev); | |
593 | *val = hdev->own_addr_type; | |
594 | hci_dev_unlock(hdev); | |
595 | ||
596 | return 0; | |
597 | } | |
598 | ||
599 | DEFINE_SIMPLE_ATTRIBUTE(own_address_type_fops, own_address_type_get, | |
600 | own_address_type_set, "%llu\n"); | |
601 | ||
8f8625cd MH |
602 | static int long_term_keys_show(struct seq_file *f, void *ptr) |
603 | { | |
604 | struct hci_dev *hdev = f->private; | |
605 | struct list_head *p, *n; | |
606 | ||
607 | hci_dev_lock(hdev); | |
f813f1be | 608 | list_for_each_safe(p, n, &hdev->long_term_keys) { |
8f8625cd | 609 | struct smp_ltk *ltk = list_entry(p, struct smp_ltk, list); |
f813f1be | 610 | seq_printf(f, "%pMR (type %u) %u 0x%02x %u %.4x %*phN %*phN\n", |
8f8625cd MH |
611 | <k->bdaddr, ltk->bdaddr_type, ltk->authenticated, |
612 | ltk->type, ltk->enc_size, __le16_to_cpu(ltk->ediv), | |
613 | 8, ltk->rand, 16, ltk->val); | |
614 | } | |
615 | hci_dev_unlock(hdev); | |
616 | ||
617 | return 0; | |
618 | } | |
619 | ||
620 | static int long_term_keys_open(struct inode *inode, struct file *file) | |
621 | { | |
622 | return single_open(file, long_term_keys_show, inode->i_private); | |
623 | } | |
624 | ||
625 | static const struct file_operations long_term_keys_fops = { | |
626 | .open = long_term_keys_open, | |
627 | .read = seq_read, | |
628 | .llseek = seq_lseek, | |
629 | .release = single_release, | |
630 | }; | |
631 | ||
4e70c7e7 MH |
632 | static int conn_min_interval_set(void *data, u64 val) |
633 | { | |
634 | struct hci_dev *hdev = data; | |
635 | ||
636 | if (val < 0x0006 || val > 0x0c80 || val > hdev->le_conn_max_interval) | |
637 | return -EINVAL; | |
638 | ||
639 | hci_dev_lock(hdev); | |
2be48b65 | 640 | hdev->le_conn_min_interval = val; |
4e70c7e7 MH |
641 | hci_dev_unlock(hdev); |
642 | ||
643 | return 0; | |
644 | } | |
645 | ||
646 | static int conn_min_interval_get(void *data, u64 *val) | |
647 | { | |
648 | struct hci_dev *hdev = data; | |
649 | ||
650 | hci_dev_lock(hdev); | |
651 | *val = hdev->le_conn_min_interval; | |
652 | hci_dev_unlock(hdev); | |
653 | ||
654 | return 0; | |
655 | } | |
656 | ||
657 | DEFINE_SIMPLE_ATTRIBUTE(conn_min_interval_fops, conn_min_interval_get, | |
658 | conn_min_interval_set, "%llu\n"); | |
659 | ||
660 | static int conn_max_interval_set(void *data, u64 val) | |
661 | { | |
662 | struct hci_dev *hdev = data; | |
663 | ||
664 | if (val < 0x0006 || val > 0x0c80 || val < hdev->le_conn_min_interval) | |
665 | return -EINVAL; | |
666 | ||
667 | hci_dev_lock(hdev); | |
2be48b65 | 668 | hdev->le_conn_max_interval = val; |
4e70c7e7 MH |
669 | hci_dev_unlock(hdev); |
670 | ||
671 | return 0; | |
672 | } | |
673 | ||
674 | static int conn_max_interval_get(void *data, u64 *val) | |
675 | { | |
676 | struct hci_dev *hdev = data; | |
677 | ||
678 | hci_dev_lock(hdev); | |
679 | *val = hdev->le_conn_max_interval; | |
680 | hci_dev_unlock(hdev); | |
681 | ||
682 | return 0; | |
683 | } | |
684 | ||
685 | DEFINE_SIMPLE_ATTRIBUTE(conn_max_interval_fops, conn_max_interval_get, | |
686 | conn_max_interval_set, "%llu\n"); | |
687 | ||
89863109 JR |
688 | static ssize_t lowpan_read(struct file *file, char __user *user_buf, |
689 | size_t count, loff_t *ppos) | |
690 | { | |
691 | struct hci_dev *hdev = file->private_data; | |
692 | char buf[3]; | |
693 | ||
694 | buf[0] = test_bit(HCI_6LOWPAN_ENABLED, &hdev->dev_flags) ? 'Y' : 'N'; | |
695 | buf[1] = '\n'; | |
696 | buf[2] = '\0'; | |
697 | return simple_read_from_buffer(user_buf, count, ppos, buf, 2); | |
698 | } | |
699 | ||
700 | static ssize_t lowpan_write(struct file *fp, const char __user *user_buffer, | |
701 | size_t count, loff_t *position) | |
702 | { | |
703 | struct hci_dev *hdev = fp->private_data; | |
704 | bool enable; | |
705 | char buf[32]; | |
706 | size_t buf_size = min(count, (sizeof(buf)-1)); | |
707 | ||
708 | if (copy_from_user(buf, user_buffer, buf_size)) | |
709 | return -EFAULT; | |
710 | ||
711 | buf[buf_size] = '\0'; | |
712 | ||
713 | if (strtobool(buf, &enable) < 0) | |
714 | return -EINVAL; | |
715 | ||
716 | if (enable == test_bit(HCI_6LOWPAN_ENABLED, &hdev->dev_flags)) | |
717 | return -EALREADY; | |
718 | ||
719 | change_bit(HCI_6LOWPAN_ENABLED, &hdev->dev_flags); | |
720 | ||
721 | return count; | |
722 | } | |
723 | ||
724 | static const struct file_operations lowpan_debugfs_fops = { | |
725 | .open = simple_open, | |
726 | .read = lowpan_read, | |
727 | .write = lowpan_write, | |
728 | .llseek = default_llseek, | |
729 | }; | |
730 | ||
1da177e4 LT |
731 | /* ---- HCI requests ---- */ |
732 | ||
42c6b129 | 733 | static void hci_req_sync_complete(struct hci_dev *hdev, u8 result) |
1da177e4 | 734 | { |
42c6b129 | 735 | BT_DBG("%s result 0x%2.2x", hdev->name, result); |
1da177e4 LT |
736 | |
737 | if (hdev->req_status == HCI_REQ_PEND) { | |
738 | hdev->req_result = result; | |
739 | hdev->req_status = HCI_REQ_DONE; | |
740 | wake_up_interruptible(&hdev->req_wait_q); | |
741 | } | |
742 | } | |
743 | ||
744 | static void hci_req_cancel(struct hci_dev *hdev, int err) | |
745 | { | |
746 | BT_DBG("%s err 0x%2.2x", hdev->name, err); | |
747 | ||
748 | if (hdev->req_status == HCI_REQ_PEND) { | |
749 | hdev->req_result = err; | |
750 | hdev->req_status = HCI_REQ_CANCELED; | |
751 | wake_up_interruptible(&hdev->req_wait_q); | |
752 | } | |
753 | } | |
754 | ||
77a63e0a FW |
755 | static struct sk_buff *hci_get_cmd_complete(struct hci_dev *hdev, u16 opcode, |
756 | u8 event) | |
75e84b7c JH |
757 | { |
758 | struct hci_ev_cmd_complete *ev; | |
759 | struct hci_event_hdr *hdr; | |
760 | struct sk_buff *skb; | |
761 | ||
762 | hci_dev_lock(hdev); | |
763 | ||
764 | skb = hdev->recv_evt; | |
765 | hdev->recv_evt = NULL; | |
766 | ||
767 | hci_dev_unlock(hdev); | |
768 | ||
769 | if (!skb) | |
770 | return ERR_PTR(-ENODATA); | |
771 | ||
772 | if (skb->len < sizeof(*hdr)) { | |
773 | BT_ERR("Too short HCI event"); | |
774 | goto failed; | |
775 | } | |
776 | ||
777 | hdr = (void *) skb->data; | |
778 | skb_pull(skb, HCI_EVENT_HDR_SIZE); | |
779 | ||
7b1abbbe JH |
780 | if (event) { |
781 | if (hdr->evt != event) | |
782 | goto failed; | |
783 | return skb; | |
784 | } | |
785 | ||
75e84b7c JH |
786 | if (hdr->evt != HCI_EV_CMD_COMPLETE) { |
787 | BT_DBG("Last event is not cmd complete (0x%2.2x)", hdr->evt); | |
788 | goto failed; | |
789 | } | |
790 | ||
791 | if (skb->len < sizeof(*ev)) { | |
792 | BT_ERR("Too short cmd_complete event"); | |
793 | goto failed; | |
794 | } | |
795 | ||
796 | ev = (void *) skb->data; | |
797 | skb_pull(skb, sizeof(*ev)); | |
798 | ||
799 | if (opcode == __le16_to_cpu(ev->opcode)) | |
800 | return skb; | |
801 | ||
802 | BT_DBG("opcode doesn't match (0x%2.2x != 0x%2.2x)", opcode, | |
803 | __le16_to_cpu(ev->opcode)); | |
804 | ||
805 | failed: | |
806 | kfree_skb(skb); | |
807 | return ERR_PTR(-ENODATA); | |
808 | } | |
809 | ||
7b1abbbe | 810 | struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen, |
07dc93dd | 811 | const void *param, u8 event, u32 timeout) |
75e84b7c JH |
812 | { |
813 | DECLARE_WAITQUEUE(wait, current); | |
814 | struct hci_request req; | |
815 | int err = 0; | |
816 | ||
817 | BT_DBG("%s", hdev->name); | |
818 | ||
819 | hci_req_init(&req, hdev); | |
820 | ||
7b1abbbe | 821 | hci_req_add_ev(&req, opcode, plen, param, event); |
75e84b7c JH |
822 | |
823 | hdev->req_status = HCI_REQ_PEND; | |
824 | ||
825 | err = hci_req_run(&req, hci_req_sync_complete); | |
826 | if (err < 0) | |
827 | return ERR_PTR(err); | |
828 | ||
829 | add_wait_queue(&hdev->req_wait_q, &wait); | |
830 | set_current_state(TASK_INTERRUPTIBLE); | |
831 | ||
832 | schedule_timeout(timeout); | |
833 | ||
834 | remove_wait_queue(&hdev->req_wait_q, &wait); | |
835 | ||
836 | if (signal_pending(current)) | |
837 | return ERR_PTR(-EINTR); | |
838 | ||
839 | switch (hdev->req_status) { | |
840 | case HCI_REQ_DONE: | |
841 | err = -bt_to_errno(hdev->req_result); | |
842 | break; | |
843 | ||
844 | case HCI_REQ_CANCELED: | |
845 | err = -hdev->req_result; | |
846 | break; | |
847 | ||
848 | default: | |
849 | err = -ETIMEDOUT; | |
850 | break; | |
851 | } | |
852 | ||
853 | hdev->req_status = hdev->req_result = 0; | |
854 | ||
855 | BT_DBG("%s end: err %d", hdev->name, err); | |
856 | ||
857 | if (err < 0) | |
858 | return ERR_PTR(err); | |
859 | ||
7b1abbbe JH |
860 | return hci_get_cmd_complete(hdev, opcode, event); |
861 | } | |
862 | EXPORT_SYMBOL(__hci_cmd_sync_ev); | |
863 | ||
864 | struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen, | |
07dc93dd | 865 | const void *param, u32 timeout) |
7b1abbbe JH |
866 | { |
867 | return __hci_cmd_sync_ev(hdev, opcode, plen, param, 0, timeout); | |
75e84b7c JH |
868 | } |
869 | EXPORT_SYMBOL(__hci_cmd_sync); | |
870 | ||
1da177e4 | 871 | /* Execute request and wait for completion. */ |
01178cd4 | 872 | static int __hci_req_sync(struct hci_dev *hdev, |
42c6b129 JH |
873 | void (*func)(struct hci_request *req, |
874 | unsigned long opt), | |
01178cd4 | 875 | unsigned long opt, __u32 timeout) |
1da177e4 | 876 | { |
42c6b129 | 877 | struct hci_request req; |
1da177e4 LT |
878 | DECLARE_WAITQUEUE(wait, current); |
879 | int err = 0; | |
880 | ||
881 | BT_DBG("%s start", hdev->name); | |
882 | ||
42c6b129 JH |
883 | hci_req_init(&req, hdev); |
884 | ||
1da177e4 LT |
885 | hdev->req_status = HCI_REQ_PEND; |
886 | ||
42c6b129 | 887 | func(&req, opt); |
53cce22d | 888 | |
42c6b129 JH |
889 | err = hci_req_run(&req, hci_req_sync_complete); |
890 | if (err < 0) { | |
53cce22d | 891 | hdev->req_status = 0; |
920c8300 AG |
892 | |
893 | /* ENODATA means the HCI request command queue is empty. | |
894 | * This can happen when a request with conditionals doesn't | |
895 | * trigger any commands to be sent. This is normal behavior | |
896 | * and should not trigger an error return. | |
42c6b129 | 897 | */ |
920c8300 AG |
898 | if (err == -ENODATA) |
899 | return 0; | |
900 | ||
901 | return err; | |
53cce22d JH |
902 | } |
903 | ||
bc4445c7 AG |
904 | add_wait_queue(&hdev->req_wait_q, &wait); |
905 | set_current_state(TASK_INTERRUPTIBLE); | |
906 | ||
1da177e4 LT |
907 | schedule_timeout(timeout); |
908 | ||
909 | remove_wait_queue(&hdev->req_wait_q, &wait); | |
910 | ||
911 | if (signal_pending(current)) | |
912 | return -EINTR; | |
913 | ||
914 | switch (hdev->req_status) { | |
915 | case HCI_REQ_DONE: | |
e175072f | 916 | err = -bt_to_errno(hdev->req_result); |
1da177e4 LT |
917 | break; |
918 | ||
919 | case HCI_REQ_CANCELED: | |
920 | err = -hdev->req_result; | |
921 | break; | |
922 | ||
923 | default: | |
924 | err = -ETIMEDOUT; | |
925 | break; | |
3ff50b79 | 926 | } |
1da177e4 | 927 | |
a5040efa | 928 | hdev->req_status = hdev->req_result = 0; |
1da177e4 LT |
929 | |
930 | BT_DBG("%s end: err %d", hdev->name, err); | |
931 | ||
932 | return err; | |
933 | } | |
934 | ||
01178cd4 | 935 | static int hci_req_sync(struct hci_dev *hdev, |
42c6b129 JH |
936 | void (*req)(struct hci_request *req, |
937 | unsigned long opt), | |
01178cd4 | 938 | unsigned long opt, __u32 timeout) |
1da177e4 LT |
939 | { |
940 | int ret; | |
941 | ||
7c6a329e MH |
942 | if (!test_bit(HCI_UP, &hdev->flags)) |
943 | return -ENETDOWN; | |
944 | ||
1da177e4 LT |
945 | /* Serialize all requests */ |
946 | hci_req_lock(hdev); | |
01178cd4 | 947 | ret = __hci_req_sync(hdev, req, opt, timeout); |
1da177e4 LT |
948 | hci_req_unlock(hdev); |
949 | ||
950 | return ret; | |
951 | } | |
952 | ||
42c6b129 | 953 | static void hci_reset_req(struct hci_request *req, unsigned long opt) |
1da177e4 | 954 | { |
42c6b129 | 955 | BT_DBG("%s %ld", req->hdev->name, opt); |
1da177e4 LT |
956 | |
957 | /* Reset device */ | |
42c6b129 JH |
958 | set_bit(HCI_RESET, &req->hdev->flags); |
959 | hci_req_add(req, HCI_OP_RESET, 0, NULL); | |
1da177e4 LT |
960 | } |
961 | ||
42c6b129 | 962 | static void bredr_init(struct hci_request *req) |
1da177e4 | 963 | { |
42c6b129 | 964 | req->hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_PACKET_BASED; |
2455a3ea | 965 | |
1da177e4 | 966 | /* Read Local Supported Features */ |
42c6b129 | 967 | hci_req_add(req, HCI_OP_READ_LOCAL_FEATURES, 0, NULL); |
1da177e4 | 968 | |
1143e5a6 | 969 | /* Read Local Version */ |
42c6b129 | 970 | hci_req_add(req, HCI_OP_READ_LOCAL_VERSION, 0, NULL); |
2177bab5 JH |
971 | |
972 | /* Read BD Address */ | |
42c6b129 | 973 | hci_req_add(req, HCI_OP_READ_BD_ADDR, 0, NULL); |
1da177e4 LT |
974 | } |
975 | ||
42c6b129 | 976 | static void amp_init(struct hci_request *req) |
e61ef499 | 977 | { |
42c6b129 | 978 | req->hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_BLOCK_BASED; |
2455a3ea | 979 | |
e61ef499 | 980 | /* Read Local Version */ |
42c6b129 | 981 | hci_req_add(req, HCI_OP_READ_LOCAL_VERSION, 0, NULL); |
6bcbc489 | 982 | |
f6996cfe MH |
983 | /* Read Local Supported Commands */ |
984 | hci_req_add(req, HCI_OP_READ_LOCAL_COMMANDS, 0, NULL); | |
985 | ||
986 | /* Read Local Supported Features */ | |
987 | hci_req_add(req, HCI_OP_READ_LOCAL_FEATURES, 0, NULL); | |
988 | ||
6bcbc489 | 989 | /* Read Local AMP Info */ |
42c6b129 | 990 | hci_req_add(req, HCI_OP_READ_LOCAL_AMP_INFO, 0, NULL); |
e71dfaba AE |
991 | |
992 | /* Read Data Blk size */ | |
42c6b129 | 993 | hci_req_add(req, HCI_OP_READ_DATA_BLOCK_SIZE, 0, NULL); |
7528ca1c | 994 | |
f38ba941 MH |
995 | /* Read Flow Control Mode */ |
996 | hci_req_add(req, HCI_OP_READ_FLOW_CONTROL_MODE, 0, NULL); | |
997 | ||
7528ca1c MH |
998 | /* Read Location Data */ |
999 | hci_req_add(req, HCI_OP_READ_LOCATION_DATA, 0, NULL); | |
e61ef499 AE |
1000 | } |
1001 | ||
42c6b129 | 1002 | static void hci_init1_req(struct hci_request *req, unsigned long opt) |
e61ef499 | 1003 | { |
42c6b129 | 1004 | struct hci_dev *hdev = req->hdev; |
e61ef499 AE |
1005 | |
1006 | BT_DBG("%s %ld", hdev->name, opt); | |
1007 | ||
11778716 AE |
1008 | /* Reset */ |
1009 | if (!test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks)) | |
42c6b129 | 1010 | hci_reset_req(req, 0); |
11778716 | 1011 | |
e61ef499 AE |
1012 | switch (hdev->dev_type) { |
1013 | case HCI_BREDR: | |
42c6b129 | 1014 | bredr_init(req); |
e61ef499 AE |
1015 | break; |
1016 | ||
1017 | case HCI_AMP: | |
42c6b129 | 1018 | amp_init(req); |
e61ef499 AE |
1019 | break; |
1020 | ||
1021 | default: | |
1022 | BT_ERR("Unknown device type %d", hdev->dev_type); | |
1023 | break; | |
1024 | } | |
e61ef499 AE |
1025 | } |
1026 | ||
42c6b129 | 1027 | static void bredr_setup(struct hci_request *req) |
2177bab5 | 1028 | { |
4ca048e3 MH |
1029 | struct hci_dev *hdev = req->hdev; |
1030 | ||
2177bab5 JH |
1031 | __le16 param; |
1032 | __u8 flt_type; | |
1033 | ||
1034 | /* Read Buffer Size (ACL mtu, max pkt, etc.) */ | |
42c6b129 | 1035 | hci_req_add(req, HCI_OP_READ_BUFFER_SIZE, 0, NULL); |
2177bab5 JH |
1036 | |
1037 | /* Read Class of Device */ | |
42c6b129 | 1038 | hci_req_add(req, HCI_OP_READ_CLASS_OF_DEV, 0, NULL); |
2177bab5 JH |
1039 | |
1040 | /* Read Local Name */ | |
42c6b129 | 1041 | hci_req_add(req, HCI_OP_READ_LOCAL_NAME, 0, NULL); |
2177bab5 JH |
1042 | |
1043 | /* Read Voice Setting */ | |
42c6b129 | 1044 | hci_req_add(req, HCI_OP_READ_VOICE_SETTING, 0, NULL); |
2177bab5 | 1045 | |
b4cb9fb2 MH |
1046 | /* Read Number of Supported IAC */ |
1047 | hci_req_add(req, HCI_OP_READ_NUM_SUPPORTED_IAC, 0, NULL); | |
1048 | ||
4b836f39 MH |
1049 | /* Read Current IAC LAP */ |
1050 | hci_req_add(req, HCI_OP_READ_CURRENT_IAC_LAP, 0, NULL); | |
1051 | ||
2177bab5 JH |
1052 | /* Clear Event Filters */ |
1053 | flt_type = HCI_FLT_CLEAR_ALL; | |
42c6b129 | 1054 | hci_req_add(req, HCI_OP_SET_EVENT_FLT, 1, &flt_type); |
2177bab5 JH |
1055 | |
1056 | /* Connection accept timeout ~20 secs */ | |
1057 | param = __constant_cpu_to_le16(0x7d00); | |
42c6b129 | 1058 | hci_req_add(req, HCI_OP_WRITE_CA_TIMEOUT, 2, ¶m); |
2177bab5 | 1059 | |
4ca048e3 MH |
1060 | /* AVM Berlin (31), aka "BlueFRITZ!", reports version 1.2, |
1061 | * but it does not support page scan related HCI commands. | |
1062 | */ | |
1063 | if (hdev->manufacturer != 31 && hdev->hci_ver > BLUETOOTH_VER_1_1) { | |
f332ec66 JH |
1064 | hci_req_add(req, HCI_OP_READ_PAGE_SCAN_ACTIVITY, 0, NULL); |
1065 | hci_req_add(req, HCI_OP_READ_PAGE_SCAN_TYPE, 0, NULL); | |
1066 | } | |
2177bab5 JH |
1067 | } |
1068 | ||
42c6b129 | 1069 | static void le_setup(struct hci_request *req) |
2177bab5 | 1070 | { |
c73eee91 JH |
1071 | struct hci_dev *hdev = req->hdev; |
1072 | ||
2177bab5 | 1073 | /* Read LE Buffer Size */ |
42c6b129 | 1074 | hci_req_add(req, HCI_OP_LE_READ_BUFFER_SIZE, 0, NULL); |
2177bab5 JH |
1075 | |
1076 | /* Read LE Local Supported Features */ | |
42c6b129 | 1077 | hci_req_add(req, HCI_OP_LE_READ_LOCAL_FEATURES, 0, NULL); |
2177bab5 JH |
1078 | |
1079 | /* Read LE Advertising Channel TX Power */ | |
42c6b129 | 1080 | hci_req_add(req, HCI_OP_LE_READ_ADV_TX_POWER, 0, NULL); |
2177bab5 JH |
1081 | |
1082 | /* Read LE White List Size */ | |
42c6b129 | 1083 | hci_req_add(req, HCI_OP_LE_READ_WHITE_LIST_SIZE, 0, NULL); |
2177bab5 JH |
1084 | |
1085 | /* Read LE Supported States */ | |
42c6b129 | 1086 | hci_req_add(req, HCI_OP_LE_READ_SUPPORTED_STATES, 0, NULL); |
c73eee91 JH |
1087 | |
1088 | /* LE-only controllers have LE implicitly enabled */ | |
1089 | if (!lmp_bredr_capable(hdev)) | |
1090 | set_bit(HCI_LE_ENABLED, &hdev->dev_flags); | |
2177bab5 JH |
1091 | } |
1092 | ||
1093 | static u8 hci_get_inquiry_mode(struct hci_dev *hdev) | |
1094 | { | |
1095 | if (lmp_ext_inq_capable(hdev)) | |
1096 | return 0x02; | |
1097 | ||
1098 | if (lmp_inq_rssi_capable(hdev)) | |
1099 | return 0x01; | |
1100 | ||
1101 | if (hdev->manufacturer == 11 && hdev->hci_rev == 0x00 && | |
1102 | hdev->lmp_subver == 0x0757) | |
1103 | return 0x01; | |
1104 | ||
1105 | if (hdev->manufacturer == 15) { | |
1106 | if (hdev->hci_rev == 0x03 && hdev->lmp_subver == 0x6963) | |
1107 | return 0x01; | |
1108 | if (hdev->hci_rev == 0x09 && hdev->lmp_subver == 0x6963) | |
1109 | return 0x01; | |
1110 | if (hdev->hci_rev == 0x00 && hdev->lmp_subver == 0x6965) | |
1111 | return 0x01; | |
1112 | } | |
1113 | ||
1114 | if (hdev->manufacturer == 31 && hdev->hci_rev == 0x2005 && | |
1115 | hdev->lmp_subver == 0x1805) | |
1116 | return 0x01; | |
1117 | ||
1118 | return 0x00; | |
1119 | } | |
1120 | ||
42c6b129 | 1121 | static void hci_setup_inquiry_mode(struct hci_request *req) |
2177bab5 JH |
1122 | { |
1123 | u8 mode; | |
1124 | ||
42c6b129 | 1125 | mode = hci_get_inquiry_mode(req->hdev); |
2177bab5 | 1126 | |
42c6b129 | 1127 | hci_req_add(req, HCI_OP_WRITE_INQUIRY_MODE, 1, &mode); |
2177bab5 JH |
1128 | } |
1129 | ||
42c6b129 | 1130 | static void hci_setup_event_mask(struct hci_request *req) |
2177bab5 | 1131 | { |
42c6b129 JH |
1132 | struct hci_dev *hdev = req->hdev; |
1133 | ||
2177bab5 JH |
1134 | /* The second byte is 0xff instead of 0x9f (two reserved bits |
1135 | * disabled) since a Broadcom 1.2 dongle doesn't respond to the | |
1136 | * command otherwise. | |
1137 | */ | |
1138 | u8 events[8] = { 0xff, 0xff, 0xfb, 0xff, 0x00, 0x00, 0x00, 0x00 }; | |
1139 | ||
1140 | /* CSR 1.1 dongles does not accept any bitfield so don't try to set | |
1141 | * any event mask for pre 1.2 devices. | |
1142 | */ | |
1143 | if (hdev->hci_ver < BLUETOOTH_VER_1_2) | |
1144 | return; | |
1145 | ||
1146 | if (lmp_bredr_capable(hdev)) { | |
1147 | events[4] |= 0x01; /* Flow Specification Complete */ | |
1148 | events[4] |= 0x02; /* Inquiry Result with RSSI */ | |
1149 | events[4] |= 0x04; /* Read Remote Extended Features Complete */ | |
1150 | events[5] |= 0x08; /* Synchronous Connection Complete */ | |
1151 | events[5] |= 0x10; /* Synchronous Connection Changed */ | |
c7882cbd MH |
1152 | } else { |
1153 | /* Use a different default for LE-only devices */ | |
1154 | memset(events, 0, sizeof(events)); | |
1155 | events[0] |= 0x10; /* Disconnection Complete */ | |
1156 | events[0] |= 0x80; /* Encryption Change */ | |
1157 | events[1] |= 0x08; /* Read Remote Version Information Complete */ | |
1158 | events[1] |= 0x20; /* Command Complete */ | |
1159 | events[1] |= 0x40; /* Command Status */ | |
1160 | events[1] |= 0x80; /* Hardware Error */ | |
1161 | events[2] |= 0x04; /* Number of Completed Packets */ | |
1162 | events[3] |= 0x02; /* Data Buffer Overflow */ | |
1163 | events[5] |= 0x80; /* Encryption Key Refresh Complete */ | |
2177bab5 JH |
1164 | } |
1165 | ||
1166 | if (lmp_inq_rssi_capable(hdev)) | |
1167 | events[4] |= 0x02; /* Inquiry Result with RSSI */ | |
1168 | ||
1169 | if (lmp_sniffsubr_capable(hdev)) | |
1170 | events[5] |= 0x20; /* Sniff Subrating */ | |
1171 | ||
1172 | if (lmp_pause_enc_capable(hdev)) | |
1173 | events[5] |= 0x80; /* Encryption Key Refresh Complete */ | |
1174 | ||
1175 | if (lmp_ext_inq_capable(hdev)) | |
1176 | events[5] |= 0x40; /* Extended Inquiry Result */ | |
1177 | ||
1178 | if (lmp_no_flush_capable(hdev)) | |
1179 | events[7] |= 0x01; /* Enhanced Flush Complete */ | |
1180 | ||
1181 | if (lmp_lsto_capable(hdev)) | |
1182 | events[6] |= 0x80; /* Link Supervision Timeout Changed */ | |
1183 | ||
1184 | if (lmp_ssp_capable(hdev)) { | |
1185 | events[6] |= 0x01; /* IO Capability Request */ | |
1186 | events[6] |= 0x02; /* IO Capability Response */ | |
1187 | events[6] |= 0x04; /* User Confirmation Request */ | |
1188 | events[6] |= 0x08; /* User Passkey Request */ | |
1189 | events[6] |= 0x10; /* Remote OOB Data Request */ | |
1190 | events[6] |= 0x20; /* Simple Pairing Complete */ | |
1191 | events[7] |= 0x04; /* User Passkey Notification */ | |
1192 | events[7] |= 0x08; /* Keypress Notification */ | |
1193 | events[7] |= 0x10; /* Remote Host Supported | |
1194 | * Features Notification | |
1195 | */ | |
1196 | } | |
1197 | ||
1198 | if (lmp_le_capable(hdev)) | |
1199 | events[7] |= 0x20; /* LE Meta-Event */ | |
1200 | ||
42c6b129 | 1201 | hci_req_add(req, HCI_OP_SET_EVENT_MASK, sizeof(events), events); |
2177bab5 JH |
1202 | |
1203 | if (lmp_le_capable(hdev)) { | |
1204 | memset(events, 0, sizeof(events)); | |
1205 | events[0] = 0x1f; | |
42c6b129 JH |
1206 | hci_req_add(req, HCI_OP_LE_SET_EVENT_MASK, |
1207 | sizeof(events), events); | |
2177bab5 JH |
1208 | } |
1209 | } | |
1210 | ||
42c6b129 | 1211 | static void hci_init2_req(struct hci_request *req, unsigned long opt) |
2177bab5 | 1212 | { |
42c6b129 JH |
1213 | struct hci_dev *hdev = req->hdev; |
1214 | ||
2177bab5 | 1215 | if (lmp_bredr_capable(hdev)) |
42c6b129 | 1216 | bredr_setup(req); |
56f87901 JH |
1217 | else |
1218 | clear_bit(HCI_BREDR_ENABLED, &hdev->dev_flags); | |
2177bab5 JH |
1219 | |
1220 | if (lmp_le_capable(hdev)) | |
42c6b129 | 1221 | le_setup(req); |
2177bab5 | 1222 | |
42c6b129 | 1223 | hci_setup_event_mask(req); |
2177bab5 | 1224 | |
3f8e2d75 JH |
1225 | /* AVM Berlin (31), aka "BlueFRITZ!", doesn't support the read |
1226 | * local supported commands HCI command. | |
1227 | */ | |
1228 | if (hdev->manufacturer != 31 && hdev->hci_ver > BLUETOOTH_VER_1_1) | |
42c6b129 | 1229 | hci_req_add(req, HCI_OP_READ_LOCAL_COMMANDS, 0, NULL); |
2177bab5 JH |
1230 | |
1231 | if (lmp_ssp_capable(hdev)) { | |
57af75a8 MH |
1232 | /* When SSP is available, then the host features page |
1233 | * should also be available as well. However some | |
1234 | * controllers list the max_page as 0 as long as SSP | |
1235 | * has not been enabled. To achieve proper debugging | |
1236 | * output, force the minimum max_page to 1 at least. | |
1237 | */ | |
1238 | hdev->max_page = 0x01; | |
1239 | ||
2177bab5 JH |
1240 | if (test_bit(HCI_SSP_ENABLED, &hdev->dev_flags)) { |
1241 | u8 mode = 0x01; | |
42c6b129 JH |
1242 | hci_req_add(req, HCI_OP_WRITE_SSP_MODE, |
1243 | sizeof(mode), &mode); | |
2177bab5 JH |
1244 | } else { |
1245 | struct hci_cp_write_eir cp; | |
1246 | ||
1247 | memset(hdev->eir, 0, sizeof(hdev->eir)); | |
1248 | memset(&cp, 0, sizeof(cp)); | |
1249 | ||
42c6b129 | 1250 | hci_req_add(req, HCI_OP_WRITE_EIR, sizeof(cp), &cp); |
2177bab5 JH |
1251 | } |
1252 | } | |
1253 | ||
1254 | if (lmp_inq_rssi_capable(hdev)) | |
42c6b129 | 1255 | hci_setup_inquiry_mode(req); |
2177bab5 JH |
1256 | |
1257 | if (lmp_inq_tx_pwr_capable(hdev)) | |
42c6b129 | 1258 | hci_req_add(req, HCI_OP_READ_INQ_RSP_TX_POWER, 0, NULL); |
2177bab5 JH |
1259 | |
1260 | if (lmp_ext_feat_capable(hdev)) { | |
1261 | struct hci_cp_read_local_ext_features cp; | |
1262 | ||
1263 | cp.page = 0x01; | |
42c6b129 JH |
1264 | hci_req_add(req, HCI_OP_READ_LOCAL_EXT_FEATURES, |
1265 | sizeof(cp), &cp); | |
2177bab5 JH |
1266 | } |
1267 | ||
1268 | if (test_bit(HCI_LINK_SECURITY, &hdev->dev_flags)) { | |
1269 | u8 enable = 1; | |
42c6b129 JH |
1270 | hci_req_add(req, HCI_OP_WRITE_AUTH_ENABLE, sizeof(enable), |
1271 | &enable); | |
2177bab5 JH |
1272 | } |
1273 | } | |
1274 | ||
42c6b129 | 1275 | static void hci_setup_link_policy(struct hci_request *req) |
2177bab5 | 1276 | { |
42c6b129 | 1277 | struct hci_dev *hdev = req->hdev; |
2177bab5 JH |
1278 | struct hci_cp_write_def_link_policy cp; |
1279 | u16 link_policy = 0; | |
1280 | ||
1281 | if (lmp_rswitch_capable(hdev)) | |
1282 | link_policy |= HCI_LP_RSWITCH; | |
1283 | if (lmp_hold_capable(hdev)) | |
1284 | link_policy |= HCI_LP_HOLD; | |
1285 | if (lmp_sniff_capable(hdev)) | |
1286 | link_policy |= HCI_LP_SNIFF; | |
1287 | if (lmp_park_capable(hdev)) | |
1288 | link_policy |= HCI_LP_PARK; | |
1289 | ||
1290 | cp.policy = cpu_to_le16(link_policy); | |
42c6b129 | 1291 | hci_req_add(req, HCI_OP_WRITE_DEF_LINK_POLICY, sizeof(cp), &cp); |
2177bab5 JH |
1292 | } |
1293 | ||
42c6b129 | 1294 | static void hci_set_le_support(struct hci_request *req) |
2177bab5 | 1295 | { |
42c6b129 | 1296 | struct hci_dev *hdev = req->hdev; |
2177bab5 JH |
1297 | struct hci_cp_write_le_host_supported cp; |
1298 | ||
c73eee91 JH |
1299 | /* LE-only devices do not support explicit enablement */ |
1300 | if (!lmp_bredr_capable(hdev)) | |
1301 | return; | |
1302 | ||
2177bab5 JH |
1303 | memset(&cp, 0, sizeof(cp)); |
1304 | ||
1305 | if (test_bit(HCI_LE_ENABLED, &hdev->dev_flags)) { | |
1306 | cp.le = 0x01; | |
1307 | cp.simul = lmp_le_br_capable(hdev); | |
1308 | } | |
1309 | ||
1310 | if (cp.le != lmp_host_le_capable(hdev)) | |
42c6b129 JH |
1311 | hci_req_add(req, HCI_OP_WRITE_LE_HOST_SUPPORTED, sizeof(cp), |
1312 | &cp); | |
2177bab5 JH |
1313 | } |
1314 | ||
d62e6d67 JH |
1315 | static void hci_set_event_mask_page_2(struct hci_request *req) |
1316 | { | |
1317 | struct hci_dev *hdev = req->hdev; | |
1318 | u8 events[8] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; | |
1319 | ||
1320 | /* If Connectionless Slave Broadcast master role is supported | |
1321 | * enable all necessary events for it. | |
1322 | */ | |
53b834d2 | 1323 | if (lmp_csb_master_capable(hdev)) { |
d62e6d67 JH |
1324 | events[1] |= 0x40; /* Triggered Clock Capture */ |
1325 | events[1] |= 0x80; /* Synchronization Train Complete */ | |
1326 | events[2] |= 0x10; /* Slave Page Response Timeout */ | |
1327 | events[2] |= 0x20; /* CSB Channel Map Change */ | |
1328 | } | |
1329 | ||
1330 | /* If Connectionless Slave Broadcast slave role is supported | |
1331 | * enable all necessary events for it. | |
1332 | */ | |
53b834d2 | 1333 | if (lmp_csb_slave_capable(hdev)) { |
d62e6d67 JH |
1334 | events[2] |= 0x01; /* Synchronization Train Received */ |
1335 | events[2] |= 0x02; /* CSB Receive */ | |
1336 | events[2] |= 0x04; /* CSB Timeout */ | |
1337 | events[2] |= 0x08; /* Truncated Page Complete */ | |
1338 | } | |
1339 | ||
40c59fcb MH |
1340 | /* Enable Authenticated Payload Timeout Expired event if supported */ |
1341 | if (lmp_ping_capable(hdev)) | |
1342 | events[2] |= 0x80; | |
1343 | ||
d62e6d67 JH |
1344 | hci_req_add(req, HCI_OP_SET_EVENT_MASK_PAGE_2, sizeof(events), events); |
1345 | } | |
1346 | ||
42c6b129 | 1347 | static void hci_init3_req(struct hci_request *req, unsigned long opt) |
2177bab5 | 1348 | { |
42c6b129 | 1349 | struct hci_dev *hdev = req->hdev; |
d2c5d77f | 1350 | u8 p; |
42c6b129 | 1351 | |
b8f4e068 GP |
1352 | /* Some Broadcom based Bluetooth controllers do not support the |
1353 | * Delete Stored Link Key command. They are clearly indicating its | |
1354 | * absence in the bit mask of supported commands. | |
1355 | * | |
1356 | * Check the supported commands and only if the the command is marked | |
1357 | * as supported send it. If not supported assume that the controller | |
1358 | * does not have actual support for stored link keys which makes this | |
1359 | * command redundant anyway. | |
f9f462fa MH |
1360 | * |
1361 | * Some controllers indicate that they support handling deleting | |
1362 | * stored link keys, but they don't. The quirk lets a driver | |
1363 | * just disable this command. | |
637b4cae | 1364 | */ |
f9f462fa MH |
1365 | if (hdev->commands[6] & 0x80 && |
1366 | !test_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks)) { | |
59f45d57 JH |
1367 | struct hci_cp_delete_stored_link_key cp; |
1368 | ||
1369 | bacpy(&cp.bdaddr, BDADDR_ANY); | |
1370 | cp.delete_all = 0x01; | |
1371 | hci_req_add(req, HCI_OP_DELETE_STORED_LINK_KEY, | |
1372 | sizeof(cp), &cp); | |
1373 | } | |
1374 | ||
2177bab5 | 1375 | if (hdev->commands[5] & 0x10) |
42c6b129 | 1376 | hci_setup_link_policy(req); |
2177bab5 | 1377 | |
79830f66 | 1378 | if (lmp_le_capable(hdev)) { |
bef34c0a MH |
1379 | if (test_bit(HCI_SETUP, &hdev->dev_flags)) { |
1380 | /* If the controller has a public BD_ADDR, then | |
1381 | * by default use that one. If this is a LE only | |
1382 | * controller without a public address, default | |
1383 | * to the random address. | |
1384 | */ | |
1385 | if (bacmp(&hdev->bdaddr, BDADDR_ANY)) | |
1386 | hdev->own_addr_type = ADDR_LE_DEV_PUBLIC; | |
1387 | else | |
1388 | hdev->own_addr_type = ADDR_LE_DEV_RANDOM; | |
1389 | } | |
79830f66 | 1390 | |
42c6b129 | 1391 | hci_set_le_support(req); |
79830f66 | 1392 | } |
d2c5d77f JH |
1393 | |
1394 | /* Read features beyond page 1 if available */ | |
1395 | for (p = 2; p < HCI_MAX_PAGES && p <= hdev->max_page; p++) { | |
1396 | struct hci_cp_read_local_ext_features cp; | |
1397 | ||
1398 | cp.page = p; | |
1399 | hci_req_add(req, HCI_OP_READ_LOCAL_EXT_FEATURES, | |
1400 | sizeof(cp), &cp); | |
1401 | } | |
2177bab5 JH |
1402 | } |
1403 | ||
5d4e7e8d JH |
1404 | static void hci_init4_req(struct hci_request *req, unsigned long opt) |
1405 | { | |
1406 | struct hci_dev *hdev = req->hdev; | |
1407 | ||
d62e6d67 JH |
1408 | /* Set event mask page 2 if the HCI command for it is supported */ |
1409 | if (hdev->commands[22] & 0x04) | |
1410 | hci_set_event_mask_page_2(req); | |
1411 | ||
5d4e7e8d | 1412 | /* Check for Synchronization Train support */ |
53b834d2 | 1413 | if (lmp_sync_train_capable(hdev)) |
5d4e7e8d | 1414 | hci_req_add(req, HCI_OP_READ_SYNC_TRAIN_PARAMS, 0, NULL); |
a6d0d690 MH |
1415 | |
1416 | /* Enable Secure Connections if supported and configured */ | |
5afeac14 MH |
1417 | if ((lmp_sc_capable(hdev) || |
1418 | test_bit(HCI_FORCE_SC, &hdev->dev_flags)) && | |
a6d0d690 MH |
1419 | test_bit(HCI_SC_ENABLED, &hdev->dev_flags)) { |
1420 | u8 support = 0x01; | |
1421 | hci_req_add(req, HCI_OP_WRITE_SC_SUPPORT, | |
1422 | sizeof(support), &support); | |
1423 | } | |
5d4e7e8d JH |
1424 | } |
1425 | ||
2177bab5 JH |
1426 | static int __hci_init(struct hci_dev *hdev) |
1427 | { | |
1428 | int err; | |
1429 | ||
1430 | err = __hci_req_sync(hdev, hci_init1_req, 0, HCI_INIT_TIMEOUT); | |
1431 | if (err < 0) | |
1432 | return err; | |
1433 | ||
4b4148e9 MH |
1434 | /* The Device Under Test (DUT) mode is special and available for |
1435 | * all controller types. So just create it early on. | |
1436 | */ | |
1437 | if (test_bit(HCI_SETUP, &hdev->dev_flags)) { | |
1438 | debugfs_create_file("dut_mode", 0644, hdev->debugfs, hdev, | |
1439 | &dut_mode_fops); | |
1440 | } | |
1441 | ||
2177bab5 JH |
1442 | /* HCI_BREDR covers both single-mode LE, BR/EDR and dual-mode |
1443 | * BR/EDR/LE type controllers. AMP controllers only need the | |
1444 | * first stage init. | |
1445 | */ | |
1446 | if (hdev->dev_type != HCI_BREDR) | |
1447 | return 0; | |
1448 | ||
1449 | err = __hci_req_sync(hdev, hci_init2_req, 0, HCI_INIT_TIMEOUT); | |
1450 | if (err < 0) | |
1451 | return err; | |
1452 | ||
5d4e7e8d JH |
1453 | err = __hci_req_sync(hdev, hci_init3_req, 0, HCI_INIT_TIMEOUT); |
1454 | if (err < 0) | |
1455 | return err; | |
1456 | ||
baf27f6e MH |
1457 | err = __hci_req_sync(hdev, hci_init4_req, 0, HCI_INIT_TIMEOUT); |
1458 | if (err < 0) | |
1459 | return err; | |
1460 | ||
1461 | /* Only create debugfs entries during the initial setup | |
1462 | * phase and not every time the controller gets powered on. | |
1463 | */ | |
1464 | if (!test_bit(HCI_SETUP, &hdev->dev_flags)) | |
1465 | return 0; | |
1466 | ||
dfb826a8 MH |
1467 | debugfs_create_file("features", 0444, hdev->debugfs, hdev, |
1468 | &features_fops); | |
ceeb3bc0 MH |
1469 | debugfs_create_u16("manufacturer", 0444, hdev->debugfs, |
1470 | &hdev->manufacturer); | |
1471 | debugfs_create_u8("hci_version", 0444, hdev->debugfs, &hdev->hci_ver); | |
1472 | debugfs_create_u16("hci_revision", 0444, hdev->debugfs, &hdev->hci_rev); | |
70afe0b8 MH |
1473 | debugfs_create_file("blacklist", 0444, hdev->debugfs, hdev, |
1474 | &blacklist_fops); | |
47219839 MH |
1475 | debugfs_create_file("uuids", 0444, hdev->debugfs, hdev, &uuids_fops); |
1476 | ||
baf27f6e MH |
1477 | if (lmp_bredr_capable(hdev)) { |
1478 | debugfs_create_file("inquiry_cache", 0444, hdev->debugfs, | |
1479 | hdev, &inquiry_cache_fops); | |
02d08d15 MH |
1480 | debugfs_create_file("link_keys", 0400, hdev->debugfs, |
1481 | hdev, &link_keys_fops); | |
babdbb3c MH |
1482 | debugfs_create_file("dev_class", 0444, hdev->debugfs, |
1483 | hdev, &dev_class_fops); | |
041000b9 MH |
1484 | debugfs_create_file("voice_setting", 0444, hdev->debugfs, |
1485 | hdev, &voice_setting_fops); | |
baf27f6e MH |
1486 | } |
1487 | ||
06f5b778 | 1488 | if (lmp_ssp_capable(hdev)) { |
ebd1e33b MH |
1489 | debugfs_create_file("auto_accept_delay", 0644, hdev->debugfs, |
1490 | hdev, &auto_accept_delay_fops); | |
06f5b778 MH |
1491 | debugfs_create_file("ssp_debug_mode", 0644, hdev->debugfs, |
1492 | hdev, &ssp_debug_mode_fops); | |
5afeac14 MH |
1493 | debugfs_create_file("force_sc_support", 0644, hdev->debugfs, |
1494 | hdev, &force_sc_support_fops); | |
134c2a89 MH |
1495 | debugfs_create_file("sc_only_mode", 0444, hdev->debugfs, |
1496 | hdev, &sc_only_mode_fops); | |
06f5b778 | 1497 | } |
ebd1e33b | 1498 | |
2bfa3531 MH |
1499 | if (lmp_sniff_capable(hdev)) { |
1500 | debugfs_create_file("idle_timeout", 0644, hdev->debugfs, | |
1501 | hdev, &idle_timeout_fops); | |
1502 | debugfs_create_file("sniff_min_interval", 0644, hdev->debugfs, | |
1503 | hdev, &sniff_min_interval_fops); | |
1504 | debugfs_create_file("sniff_max_interval", 0644, hdev->debugfs, | |
1505 | hdev, &sniff_max_interval_fops); | |
1506 | } | |
1507 | ||
d0f729b8 MH |
1508 | if (lmp_le_capable(hdev)) { |
1509 | debugfs_create_u8("white_list_size", 0444, hdev->debugfs, | |
1510 | &hdev->le_white_list_size); | |
e7b8fc92 MH |
1511 | debugfs_create_file("static_address", 0444, hdev->debugfs, |
1512 | hdev, &static_address_fops); | |
92202185 MH |
1513 | debugfs_create_file("own_address_type", 0644, hdev->debugfs, |
1514 | hdev, &own_address_type_fops); | |
8f8625cd MH |
1515 | debugfs_create_file("long_term_keys", 0400, hdev->debugfs, |
1516 | hdev, &long_term_keys_fops); | |
4e70c7e7 MH |
1517 | debugfs_create_file("conn_min_interval", 0644, hdev->debugfs, |
1518 | hdev, &conn_min_interval_fops); | |
1519 | debugfs_create_file("conn_max_interval", 0644, hdev->debugfs, | |
1520 | hdev, &conn_max_interval_fops); | |
89863109 JR |
1521 | debugfs_create_file("6lowpan", 0644, hdev->debugfs, hdev, |
1522 | &lowpan_debugfs_fops); | |
d0f729b8 | 1523 | } |
e7b8fc92 | 1524 | |
baf27f6e | 1525 | return 0; |
2177bab5 JH |
1526 | } |
1527 | ||
42c6b129 | 1528 | static void hci_scan_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
1529 | { |
1530 | __u8 scan = opt; | |
1531 | ||
42c6b129 | 1532 | BT_DBG("%s %x", req->hdev->name, scan); |
1da177e4 LT |
1533 | |
1534 | /* Inquiry and Page scans */ | |
42c6b129 | 1535 | hci_req_add(req, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan); |
1da177e4 LT |
1536 | } |
1537 | ||
42c6b129 | 1538 | static void hci_auth_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
1539 | { |
1540 | __u8 auth = opt; | |
1541 | ||
42c6b129 | 1542 | BT_DBG("%s %x", req->hdev->name, auth); |
1da177e4 LT |
1543 | |
1544 | /* Authentication */ | |
42c6b129 | 1545 | hci_req_add(req, HCI_OP_WRITE_AUTH_ENABLE, 1, &auth); |
1da177e4 LT |
1546 | } |
1547 | ||
42c6b129 | 1548 | static void hci_encrypt_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
1549 | { |
1550 | __u8 encrypt = opt; | |
1551 | ||
42c6b129 | 1552 | BT_DBG("%s %x", req->hdev->name, encrypt); |
1da177e4 | 1553 | |
e4e8e37c | 1554 | /* Encryption */ |
42c6b129 | 1555 | hci_req_add(req, HCI_OP_WRITE_ENCRYPT_MODE, 1, &encrypt); |
1da177e4 LT |
1556 | } |
1557 | ||
42c6b129 | 1558 | static void hci_linkpol_req(struct hci_request *req, unsigned long opt) |
e4e8e37c MH |
1559 | { |
1560 | __le16 policy = cpu_to_le16(opt); | |
1561 | ||
42c6b129 | 1562 | BT_DBG("%s %x", req->hdev->name, policy); |
e4e8e37c MH |
1563 | |
1564 | /* Default link policy */ | |
42c6b129 | 1565 | hci_req_add(req, HCI_OP_WRITE_DEF_LINK_POLICY, 2, &policy); |
e4e8e37c MH |
1566 | } |
1567 | ||
8e87d142 | 1568 | /* Get HCI device by index. |
1da177e4 LT |
1569 | * Device is held on return. */ |
1570 | struct hci_dev *hci_dev_get(int index) | |
1571 | { | |
8035ded4 | 1572 | struct hci_dev *hdev = NULL, *d; |
1da177e4 LT |
1573 | |
1574 | BT_DBG("%d", index); | |
1575 | ||
1576 | if (index < 0) | |
1577 | return NULL; | |
1578 | ||
1579 | read_lock(&hci_dev_list_lock); | |
8035ded4 | 1580 | list_for_each_entry(d, &hci_dev_list, list) { |
1da177e4 LT |
1581 | if (d->id == index) { |
1582 | hdev = hci_dev_hold(d); | |
1583 | break; | |
1584 | } | |
1585 | } | |
1586 | read_unlock(&hci_dev_list_lock); | |
1587 | return hdev; | |
1588 | } | |
1da177e4 LT |
1589 | |
1590 | /* ---- Inquiry support ---- */ | |
ff9ef578 | 1591 | |
30dc78e1 JH |
1592 | bool hci_discovery_active(struct hci_dev *hdev) |
1593 | { | |
1594 | struct discovery_state *discov = &hdev->discovery; | |
1595 | ||
6fbe195d | 1596 | switch (discov->state) { |
343f935b | 1597 | case DISCOVERY_FINDING: |
6fbe195d | 1598 | case DISCOVERY_RESOLVING: |
30dc78e1 JH |
1599 | return true; |
1600 | ||
6fbe195d AG |
1601 | default: |
1602 | return false; | |
1603 | } | |
30dc78e1 JH |
1604 | } |
1605 | ||
ff9ef578 JH |
1606 | void hci_discovery_set_state(struct hci_dev *hdev, int state) |
1607 | { | |
1608 | BT_DBG("%s state %u -> %u", hdev->name, hdev->discovery.state, state); | |
1609 | ||
1610 | if (hdev->discovery.state == state) | |
1611 | return; | |
1612 | ||
1613 | switch (state) { | |
1614 | case DISCOVERY_STOPPED: | |
7b99b659 AG |
1615 | if (hdev->discovery.state != DISCOVERY_STARTING) |
1616 | mgmt_discovering(hdev, 0); | |
ff9ef578 JH |
1617 | break; |
1618 | case DISCOVERY_STARTING: | |
1619 | break; | |
343f935b | 1620 | case DISCOVERY_FINDING: |
ff9ef578 JH |
1621 | mgmt_discovering(hdev, 1); |
1622 | break; | |
30dc78e1 JH |
1623 | case DISCOVERY_RESOLVING: |
1624 | break; | |
ff9ef578 JH |
1625 | case DISCOVERY_STOPPING: |
1626 | break; | |
1627 | } | |
1628 | ||
1629 | hdev->discovery.state = state; | |
1630 | } | |
1631 | ||
1f9b9a5d | 1632 | void hci_inquiry_cache_flush(struct hci_dev *hdev) |
1da177e4 | 1633 | { |
30883512 | 1634 | struct discovery_state *cache = &hdev->discovery; |
b57c1a56 | 1635 | struct inquiry_entry *p, *n; |
1da177e4 | 1636 | |
561aafbc JH |
1637 | list_for_each_entry_safe(p, n, &cache->all, all) { |
1638 | list_del(&p->all); | |
b57c1a56 | 1639 | kfree(p); |
1da177e4 | 1640 | } |
561aafbc JH |
1641 | |
1642 | INIT_LIST_HEAD(&cache->unknown); | |
1643 | INIT_LIST_HEAD(&cache->resolve); | |
1da177e4 LT |
1644 | } |
1645 | ||
a8c5fb1a GP |
1646 | struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, |
1647 | bdaddr_t *bdaddr) | |
1da177e4 | 1648 | { |
30883512 | 1649 | struct discovery_state *cache = &hdev->discovery; |
1da177e4 LT |
1650 | struct inquiry_entry *e; |
1651 | ||
6ed93dc6 | 1652 | BT_DBG("cache %p, %pMR", cache, bdaddr); |
1da177e4 | 1653 | |
561aafbc JH |
1654 | list_for_each_entry(e, &cache->all, all) { |
1655 | if (!bacmp(&e->data.bdaddr, bdaddr)) | |
1656 | return e; | |
1657 | } | |
1658 | ||
1659 | return NULL; | |
1660 | } | |
1661 | ||
1662 | struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev, | |
04124681 | 1663 | bdaddr_t *bdaddr) |
561aafbc | 1664 | { |
30883512 | 1665 | struct discovery_state *cache = &hdev->discovery; |
561aafbc JH |
1666 | struct inquiry_entry *e; |
1667 | ||
6ed93dc6 | 1668 | BT_DBG("cache %p, %pMR", cache, bdaddr); |
561aafbc JH |
1669 | |
1670 | list_for_each_entry(e, &cache->unknown, list) { | |
1da177e4 | 1671 | if (!bacmp(&e->data.bdaddr, bdaddr)) |
b57c1a56 JH |
1672 | return e; |
1673 | } | |
1674 | ||
1675 | return NULL; | |
1da177e4 LT |
1676 | } |
1677 | ||
30dc78e1 | 1678 | struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev, |
04124681 GP |
1679 | bdaddr_t *bdaddr, |
1680 | int state) | |
30dc78e1 JH |
1681 | { |
1682 | struct discovery_state *cache = &hdev->discovery; | |
1683 | struct inquiry_entry *e; | |
1684 | ||
6ed93dc6 | 1685 | BT_DBG("cache %p bdaddr %pMR state %d", cache, bdaddr, state); |
30dc78e1 JH |
1686 | |
1687 | list_for_each_entry(e, &cache->resolve, list) { | |
1688 | if (!bacmp(bdaddr, BDADDR_ANY) && e->name_state == state) | |
1689 | return e; | |
1690 | if (!bacmp(&e->data.bdaddr, bdaddr)) | |
1691 | return e; | |
1692 | } | |
1693 | ||
1694 | return NULL; | |
1695 | } | |
1696 | ||
a3d4e20a | 1697 | void hci_inquiry_cache_update_resolve(struct hci_dev *hdev, |
04124681 | 1698 | struct inquiry_entry *ie) |
a3d4e20a JH |
1699 | { |
1700 | struct discovery_state *cache = &hdev->discovery; | |
1701 | struct list_head *pos = &cache->resolve; | |
1702 | struct inquiry_entry *p; | |
1703 | ||
1704 | list_del(&ie->list); | |
1705 | ||
1706 | list_for_each_entry(p, &cache->resolve, list) { | |
1707 | if (p->name_state != NAME_PENDING && | |
a8c5fb1a | 1708 | abs(p->data.rssi) >= abs(ie->data.rssi)) |
a3d4e20a JH |
1709 | break; |
1710 | pos = &p->list; | |
1711 | } | |
1712 | ||
1713 | list_add(&ie->list, pos); | |
1714 | } | |
1715 | ||
3175405b | 1716 | bool hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data, |
04124681 | 1717 | bool name_known, bool *ssp) |
1da177e4 | 1718 | { |
30883512 | 1719 | struct discovery_state *cache = &hdev->discovery; |
70f23020 | 1720 | struct inquiry_entry *ie; |
1da177e4 | 1721 | |
6ed93dc6 | 1722 | BT_DBG("cache %p, %pMR", cache, &data->bdaddr); |
1da177e4 | 1723 | |
2b2fec4d SJ |
1724 | hci_remove_remote_oob_data(hdev, &data->bdaddr); |
1725 | ||
388fc8fa JH |
1726 | if (ssp) |
1727 | *ssp = data->ssp_mode; | |
1728 | ||
70f23020 | 1729 | ie = hci_inquiry_cache_lookup(hdev, &data->bdaddr); |
a3d4e20a | 1730 | if (ie) { |
388fc8fa JH |
1731 | if (ie->data.ssp_mode && ssp) |
1732 | *ssp = true; | |
1733 | ||
a3d4e20a | 1734 | if (ie->name_state == NAME_NEEDED && |
a8c5fb1a | 1735 | data->rssi != ie->data.rssi) { |
a3d4e20a JH |
1736 | ie->data.rssi = data->rssi; |
1737 | hci_inquiry_cache_update_resolve(hdev, ie); | |
1738 | } | |
1739 | ||
561aafbc | 1740 | goto update; |
a3d4e20a | 1741 | } |
561aafbc JH |
1742 | |
1743 | /* Entry not in the cache. Add new one. */ | |
1744 | ie = kzalloc(sizeof(struct inquiry_entry), GFP_ATOMIC); | |
1745 | if (!ie) | |
3175405b | 1746 | return false; |
561aafbc JH |
1747 | |
1748 | list_add(&ie->all, &cache->all); | |
1749 | ||
1750 | if (name_known) { | |
1751 | ie->name_state = NAME_KNOWN; | |
1752 | } else { | |
1753 | ie->name_state = NAME_NOT_KNOWN; | |
1754 | list_add(&ie->list, &cache->unknown); | |
1755 | } | |
70f23020 | 1756 | |
561aafbc JH |
1757 | update: |
1758 | if (name_known && ie->name_state != NAME_KNOWN && | |
a8c5fb1a | 1759 | ie->name_state != NAME_PENDING) { |
561aafbc JH |
1760 | ie->name_state = NAME_KNOWN; |
1761 | list_del(&ie->list); | |
1da177e4 LT |
1762 | } |
1763 | ||
70f23020 AE |
1764 | memcpy(&ie->data, data, sizeof(*data)); |
1765 | ie->timestamp = jiffies; | |
1da177e4 | 1766 | cache->timestamp = jiffies; |
3175405b JH |
1767 | |
1768 | if (ie->name_state == NAME_NOT_KNOWN) | |
1769 | return false; | |
1770 | ||
1771 | return true; | |
1da177e4 LT |
1772 | } |
1773 | ||
1774 | static int inquiry_cache_dump(struct hci_dev *hdev, int num, __u8 *buf) | |
1775 | { | |
30883512 | 1776 | struct discovery_state *cache = &hdev->discovery; |
1da177e4 LT |
1777 | struct inquiry_info *info = (struct inquiry_info *) buf; |
1778 | struct inquiry_entry *e; | |
1779 | int copied = 0; | |
1780 | ||
561aafbc | 1781 | list_for_each_entry(e, &cache->all, all) { |
1da177e4 | 1782 | struct inquiry_data *data = &e->data; |
b57c1a56 JH |
1783 | |
1784 | if (copied >= num) | |
1785 | break; | |
1786 | ||
1da177e4 LT |
1787 | bacpy(&info->bdaddr, &data->bdaddr); |
1788 | info->pscan_rep_mode = data->pscan_rep_mode; | |
1789 | info->pscan_period_mode = data->pscan_period_mode; | |
1790 | info->pscan_mode = data->pscan_mode; | |
1791 | memcpy(info->dev_class, data->dev_class, 3); | |
1792 | info->clock_offset = data->clock_offset; | |
b57c1a56 | 1793 | |
1da177e4 | 1794 | info++; |
b57c1a56 | 1795 | copied++; |
1da177e4 LT |
1796 | } |
1797 | ||
1798 | BT_DBG("cache %p, copied %d", cache, copied); | |
1799 | return copied; | |
1800 | } | |
1801 | ||
42c6b129 | 1802 | static void hci_inq_req(struct hci_request *req, unsigned long opt) |
1da177e4 LT |
1803 | { |
1804 | struct hci_inquiry_req *ir = (struct hci_inquiry_req *) opt; | |
42c6b129 | 1805 | struct hci_dev *hdev = req->hdev; |
1da177e4 LT |
1806 | struct hci_cp_inquiry cp; |
1807 | ||
1808 | BT_DBG("%s", hdev->name); | |
1809 | ||
1810 | if (test_bit(HCI_INQUIRY, &hdev->flags)) | |
1811 | return; | |
1812 | ||
1813 | /* Start Inquiry */ | |
1814 | memcpy(&cp.lap, &ir->lap, 3); | |
1815 | cp.length = ir->length; | |
1816 | cp.num_rsp = ir->num_rsp; | |
42c6b129 | 1817 | hci_req_add(req, HCI_OP_INQUIRY, sizeof(cp), &cp); |
1da177e4 LT |
1818 | } |
1819 | ||
3e13fa1e AG |
1820 | static int wait_inquiry(void *word) |
1821 | { | |
1822 | schedule(); | |
1823 | return signal_pending(current); | |
1824 | } | |
1825 | ||
1da177e4 LT |
1826 | int hci_inquiry(void __user *arg) |
1827 | { | |
1828 | __u8 __user *ptr = arg; | |
1829 | struct hci_inquiry_req ir; | |
1830 | struct hci_dev *hdev; | |
1831 | int err = 0, do_inquiry = 0, max_rsp; | |
1832 | long timeo; | |
1833 | __u8 *buf; | |
1834 | ||
1835 | if (copy_from_user(&ir, ptr, sizeof(ir))) | |
1836 | return -EFAULT; | |
1837 | ||
5a08ecce AE |
1838 | hdev = hci_dev_get(ir.dev_id); |
1839 | if (!hdev) | |
1da177e4 LT |
1840 | return -ENODEV; |
1841 | ||
0736cfa8 MH |
1842 | if (test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) { |
1843 | err = -EBUSY; | |
1844 | goto done; | |
1845 | } | |
1846 | ||
5b69bef5 MH |
1847 | if (hdev->dev_type != HCI_BREDR) { |
1848 | err = -EOPNOTSUPP; | |
1849 | goto done; | |
1850 | } | |
1851 | ||
56f87901 JH |
1852 | if (!test_bit(HCI_BREDR_ENABLED, &hdev->dev_flags)) { |
1853 | err = -EOPNOTSUPP; | |
1854 | goto done; | |
1855 | } | |
1856 | ||
09fd0de5 | 1857 | hci_dev_lock(hdev); |
8e87d142 | 1858 | if (inquiry_cache_age(hdev) > INQUIRY_CACHE_AGE_MAX || |
a8c5fb1a | 1859 | inquiry_cache_empty(hdev) || ir.flags & IREQ_CACHE_FLUSH) { |
1f9b9a5d | 1860 | hci_inquiry_cache_flush(hdev); |
1da177e4 LT |
1861 | do_inquiry = 1; |
1862 | } | |
09fd0de5 | 1863 | hci_dev_unlock(hdev); |
1da177e4 | 1864 | |
04837f64 | 1865 | timeo = ir.length * msecs_to_jiffies(2000); |
70f23020 AE |
1866 | |
1867 | if (do_inquiry) { | |
01178cd4 JH |
1868 | err = hci_req_sync(hdev, hci_inq_req, (unsigned long) &ir, |
1869 | timeo); | |
70f23020 AE |
1870 | if (err < 0) |
1871 | goto done; | |
3e13fa1e AG |
1872 | |
1873 | /* Wait until Inquiry procedure finishes (HCI_INQUIRY flag is | |
1874 | * cleared). If it is interrupted by a signal, return -EINTR. | |
1875 | */ | |
1876 | if (wait_on_bit(&hdev->flags, HCI_INQUIRY, wait_inquiry, | |
1877 | TASK_INTERRUPTIBLE)) | |
1878 | return -EINTR; | |
70f23020 | 1879 | } |
1da177e4 | 1880 | |
8fc9ced3 GP |
1881 | /* for unlimited number of responses we will use buffer with |
1882 | * 255 entries | |
1883 | */ | |
1da177e4 LT |
1884 | max_rsp = (ir.num_rsp == 0) ? 255 : ir.num_rsp; |
1885 | ||
1886 | /* cache_dump can't sleep. Therefore we allocate temp buffer and then | |
1887 | * copy it to the user space. | |
1888 | */ | |
01df8c31 | 1889 | buf = kmalloc(sizeof(struct inquiry_info) * max_rsp, GFP_KERNEL); |
70f23020 | 1890 | if (!buf) { |
1da177e4 LT |
1891 | err = -ENOMEM; |
1892 | goto done; | |
1893 | } | |
1894 | ||
09fd0de5 | 1895 | hci_dev_lock(hdev); |
1da177e4 | 1896 | ir.num_rsp = inquiry_cache_dump(hdev, max_rsp, buf); |
09fd0de5 | 1897 | hci_dev_unlock(hdev); |
1da177e4 LT |
1898 | |
1899 | BT_DBG("num_rsp %d", ir.num_rsp); | |
1900 | ||
1901 | if (!copy_to_user(ptr, &ir, sizeof(ir))) { | |
1902 | ptr += sizeof(ir); | |
1903 | if (copy_to_user(ptr, buf, sizeof(struct inquiry_info) * | |
a8c5fb1a | 1904 | ir.num_rsp)) |
1da177e4 | 1905 | err = -EFAULT; |
8e87d142 | 1906 | } else |
1da177e4 LT |
1907 | err = -EFAULT; |
1908 | ||
1909 | kfree(buf); | |
1910 | ||
1911 | done: | |
1912 | hci_dev_put(hdev); | |
1913 | return err; | |
1914 | } | |
1915 | ||
cbed0ca1 | 1916 | static int hci_dev_do_open(struct hci_dev *hdev) |
1da177e4 | 1917 | { |
1da177e4 LT |
1918 | int ret = 0; |
1919 | ||
1da177e4 LT |
1920 | BT_DBG("%s %p", hdev->name, hdev); |
1921 | ||
1922 | hci_req_lock(hdev); | |
1923 | ||
94324962 JH |
1924 | if (test_bit(HCI_UNREGISTER, &hdev->dev_flags)) { |
1925 | ret = -ENODEV; | |
1926 | goto done; | |
1927 | } | |
1928 | ||
a5c8f270 MH |
1929 | if (!test_bit(HCI_SETUP, &hdev->dev_flags)) { |
1930 | /* Check for rfkill but allow the HCI setup stage to | |
1931 | * proceed (which in itself doesn't cause any RF activity). | |
1932 | */ | |
1933 | if (test_bit(HCI_RFKILLED, &hdev->dev_flags)) { | |
1934 | ret = -ERFKILL; | |
1935 | goto done; | |
1936 | } | |
1937 | ||
1938 | /* Check for valid public address or a configured static | |
1939 | * random adddress, but let the HCI setup proceed to | |
1940 | * be able to determine if there is a public address | |
1941 | * or not. | |
1942 | * | |
c6beca0e MH |
1943 | * In case of user channel usage, it is not important |
1944 | * if a public address or static random address is | |
1945 | * available. | |
1946 | * | |
a5c8f270 MH |
1947 | * This check is only valid for BR/EDR controllers |
1948 | * since AMP controllers do not have an address. | |
1949 | */ | |
c6beca0e MH |
1950 | if (!test_bit(HCI_USER_CHANNEL, &hdev->dev_flags) && |
1951 | hdev->dev_type == HCI_BREDR && | |
a5c8f270 MH |
1952 | !bacmp(&hdev->bdaddr, BDADDR_ANY) && |
1953 | !bacmp(&hdev->static_addr, BDADDR_ANY)) { | |
1954 | ret = -EADDRNOTAVAIL; | |
1955 | goto done; | |
1956 | } | |
611b30f7 MH |
1957 | } |
1958 | ||
1da177e4 LT |
1959 | if (test_bit(HCI_UP, &hdev->flags)) { |
1960 | ret = -EALREADY; | |
1961 | goto done; | |
1962 | } | |
1963 | ||
1da177e4 LT |
1964 | if (hdev->open(hdev)) { |
1965 | ret = -EIO; | |
1966 | goto done; | |
1967 | } | |
1968 | ||
f41c70c4 MH |
1969 | atomic_set(&hdev->cmd_cnt, 1); |
1970 | set_bit(HCI_INIT, &hdev->flags); | |
1971 | ||
1972 | if (hdev->setup && test_bit(HCI_SETUP, &hdev->dev_flags)) | |
1973 | ret = hdev->setup(hdev); | |
1974 | ||
1975 | if (!ret) { | |
f41c70c4 MH |
1976 | if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks)) |
1977 | set_bit(HCI_RAW, &hdev->flags); | |
1978 | ||
0736cfa8 MH |
1979 | if (!test_bit(HCI_RAW, &hdev->flags) && |
1980 | !test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) | |
f41c70c4 | 1981 | ret = __hci_init(hdev); |
1da177e4 LT |
1982 | } |
1983 | ||
f41c70c4 MH |
1984 | clear_bit(HCI_INIT, &hdev->flags); |
1985 | ||
1da177e4 LT |
1986 | if (!ret) { |
1987 | hci_dev_hold(hdev); | |
1988 | set_bit(HCI_UP, &hdev->flags); | |
1989 | hci_notify(hdev, HCI_DEV_UP); | |
bb4b2a9a | 1990 | if (!test_bit(HCI_SETUP, &hdev->dev_flags) && |
0736cfa8 | 1991 | !test_bit(HCI_USER_CHANNEL, &hdev->dev_flags) && |
1514b892 | 1992 | hdev->dev_type == HCI_BREDR) { |
09fd0de5 | 1993 | hci_dev_lock(hdev); |
744cf19e | 1994 | mgmt_powered(hdev, 1); |
09fd0de5 | 1995 | hci_dev_unlock(hdev); |
56e5cb86 | 1996 | } |
8e87d142 | 1997 | } else { |
1da177e4 | 1998 | /* Init failed, cleanup */ |
3eff45ea | 1999 | flush_work(&hdev->tx_work); |
c347b765 | 2000 | flush_work(&hdev->cmd_work); |
b78752cc | 2001 | flush_work(&hdev->rx_work); |
1da177e4 LT |
2002 | |
2003 | skb_queue_purge(&hdev->cmd_q); | |
2004 | skb_queue_purge(&hdev->rx_q); | |
2005 | ||
2006 | if (hdev->flush) | |
2007 | hdev->flush(hdev); | |
2008 | ||
2009 | if (hdev->sent_cmd) { | |
2010 | kfree_skb(hdev->sent_cmd); | |
2011 | hdev->sent_cmd = NULL; | |
2012 | } | |
2013 | ||
2014 | hdev->close(hdev); | |
2015 | hdev->flags = 0; | |
2016 | } | |
2017 | ||
2018 | done: | |
2019 | hci_req_unlock(hdev); | |
1da177e4 LT |
2020 | return ret; |
2021 | } | |
2022 | ||
cbed0ca1 JH |
2023 | /* ---- HCI ioctl helpers ---- */ |
2024 | ||
2025 | int hci_dev_open(__u16 dev) | |
2026 | { | |
2027 | struct hci_dev *hdev; | |
2028 | int err; | |
2029 | ||
2030 | hdev = hci_dev_get(dev); | |
2031 | if (!hdev) | |
2032 | return -ENODEV; | |
2033 | ||
e1d08f40 JH |
2034 | /* We need to ensure that no other power on/off work is pending |
2035 | * before proceeding to call hci_dev_do_open. This is | |
2036 | * particularly important if the setup procedure has not yet | |
2037 | * completed. | |
2038 | */ | |
2039 | if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) | |
2040 | cancel_delayed_work(&hdev->power_off); | |
2041 | ||
a5c8f270 MH |
2042 | /* After this call it is guaranteed that the setup procedure |
2043 | * has finished. This means that error conditions like RFKILL | |
2044 | * or no valid public or static random address apply. | |
2045 | */ | |
e1d08f40 JH |
2046 | flush_workqueue(hdev->req_workqueue); |
2047 | ||
cbed0ca1 JH |
2048 | err = hci_dev_do_open(hdev); |
2049 | ||
2050 | hci_dev_put(hdev); | |
2051 | ||
2052 | return err; | |
2053 | } | |
2054 | ||
1da177e4 LT |
2055 | static int hci_dev_do_close(struct hci_dev *hdev) |
2056 | { | |
2057 | BT_DBG("%s %p", hdev->name, hdev); | |
2058 | ||
78c04c0b VCG |
2059 | cancel_delayed_work(&hdev->power_off); |
2060 | ||
1da177e4 LT |
2061 | hci_req_cancel(hdev, ENODEV); |
2062 | hci_req_lock(hdev); | |
2063 | ||
2064 | if (!test_and_clear_bit(HCI_UP, &hdev->flags)) { | |
b79f44c1 | 2065 | del_timer_sync(&hdev->cmd_timer); |
1da177e4 LT |
2066 | hci_req_unlock(hdev); |
2067 | return 0; | |
2068 | } | |
2069 | ||
3eff45ea GP |
2070 | /* Flush RX and TX works */ |
2071 | flush_work(&hdev->tx_work); | |
b78752cc | 2072 | flush_work(&hdev->rx_work); |
1da177e4 | 2073 | |
16ab91ab | 2074 | if (hdev->discov_timeout > 0) { |
e0f9309f | 2075 | cancel_delayed_work(&hdev->discov_off); |
16ab91ab | 2076 | hdev->discov_timeout = 0; |
5e5282bb | 2077 | clear_bit(HCI_DISCOVERABLE, &hdev->dev_flags); |
310a3d48 | 2078 | clear_bit(HCI_LIMITED_DISCOVERABLE, &hdev->dev_flags); |
16ab91ab JH |
2079 | } |
2080 | ||
a8b2d5c2 | 2081 | if (test_and_clear_bit(HCI_SERVICE_CACHE, &hdev->dev_flags)) |
7d78525d JH |
2082 | cancel_delayed_work(&hdev->service_cache); |
2083 | ||
7ba8b4be AG |
2084 | cancel_delayed_work_sync(&hdev->le_scan_disable); |
2085 | ||
09fd0de5 | 2086 | hci_dev_lock(hdev); |
1f9b9a5d | 2087 | hci_inquiry_cache_flush(hdev); |
1da177e4 | 2088 | hci_conn_hash_flush(hdev); |
09fd0de5 | 2089 | hci_dev_unlock(hdev); |
1da177e4 LT |
2090 | |
2091 | hci_notify(hdev, HCI_DEV_DOWN); | |
2092 | ||
2093 | if (hdev->flush) | |
2094 | hdev->flush(hdev); | |
2095 | ||
2096 | /* Reset device */ | |
2097 | skb_queue_purge(&hdev->cmd_q); | |
2098 | atomic_set(&hdev->cmd_cnt, 1); | |
8af59467 | 2099 | if (!test_bit(HCI_RAW, &hdev->flags) && |
3a6afbd2 | 2100 | !test_bit(HCI_AUTO_OFF, &hdev->dev_flags) && |
a6c511c6 | 2101 | test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks)) { |
1da177e4 | 2102 | set_bit(HCI_INIT, &hdev->flags); |
01178cd4 | 2103 | __hci_req_sync(hdev, hci_reset_req, 0, HCI_CMD_TIMEOUT); |
1da177e4 LT |
2104 | clear_bit(HCI_INIT, &hdev->flags); |
2105 | } | |
2106 | ||
c347b765 GP |
2107 | /* flush cmd work */ |
2108 | flush_work(&hdev->cmd_work); | |
1da177e4 LT |
2109 | |
2110 | /* Drop queues */ | |
2111 | skb_queue_purge(&hdev->rx_q); | |
2112 | skb_queue_purge(&hdev->cmd_q); | |
2113 | skb_queue_purge(&hdev->raw_q); | |
2114 | ||
2115 | /* Drop last sent command */ | |
2116 | if (hdev->sent_cmd) { | |
b79f44c1 | 2117 | del_timer_sync(&hdev->cmd_timer); |
1da177e4 LT |
2118 | kfree_skb(hdev->sent_cmd); |
2119 | hdev->sent_cmd = NULL; | |
2120 | } | |
2121 | ||
b6ddb638 JH |
2122 | kfree_skb(hdev->recv_evt); |
2123 | hdev->recv_evt = NULL; | |
2124 | ||
1da177e4 LT |
2125 | /* After this point our queues are empty |
2126 | * and no tasks are scheduled. */ | |
2127 | hdev->close(hdev); | |
2128 | ||
35b973c9 JH |
2129 | /* Clear flags */ |
2130 | hdev->flags = 0; | |
2131 | hdev->dev_flags &= ~HCI_PERSISTENT_MASK; | |
2132 | ||
93c311a0 MH |
2133 | if (!test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) { |
2134 | if (hdev->dev_type == HCI_BREDR) { | |
2135 | hci_dev_lock(hdev); | |
2136 | mgmt_powered(hdev, 0); | |
2137 | hci_dev_unlock(hdev); | |
2138 | } | |
8ee56540 | 2139 | } |
5add6af8 | 2140 | |
ced5c338 | 2141 | /* Controller radio is available but is currently powered down */ |
536619e8 | 2142 | hdev->amp_status = AMP_STATUS_POWERED_DOWN; |
ced5c338 | 2143 | |
e59fda8d | 2144 | memset(hdev->eir, 0, sizeof(hdev->eir)); |
09b3c3fb | 2145 | memset(hdev->dev_class, 0, sizeof(hdev->dev_class)); |
e59fda8d | 2146 | |
1da177e4 LT |
2147 | hci_req_unlock(hdev); |
2148 | ||
2149 | hci_dev_put(hdev); | |
2150 | return 0; | |
2151 | } | |
2152 | ||
2153 | int hci_dev_close(__u16 dev) | |
2154 | { | |
2155 | struct hci_dev *hdev; | |
2156 | int err; | |
2157 | ||
70f23020 AE |
2158 | hdev = hci_dev_get(dev); |
2159 | if (!hdev) | |
1da177e4 | 2160 | return -ENODEV; |
8ee56540 | 2161 | |
0736cfa8 MH |
2162 | if (test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) { |
2163 | err = -EBUSY; | |
2164 | goto done; | |
2165 | } | |
2166 | ||
8ee56540 MH |
2167 | if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) |
2168 | cancel_delayed_work(&hdev->power_off); | |
2169 | ||
1da177e4 | 2170 | err = hci_dev_do_close(hdev); |
8ee56540 | 2171 | |
0736cfa8 | 2172 | done: |
1da177e4 LT |
2173 | hci_dev_put(hdev); |
2174 | return err; | |
2175 | } | |
2176 | ||
2177 | int hci_dev_reset(__u16 dev) | |
2178 | { | |
2179 | struct hci_dev *hdev; | |
2180 | int ret = 0; | |
2181 | ||
70f23020 AE |
2182 | hdev = hci_dev_get(dev); |
2183 | if (!hdev) | |
1da177e4 LT |
2184 | return -ENODEV; |
2185 | ||
2186 | hci_req_lock(hdev); | |
1da177e4 | 2187 | |
808a049e MH |
2188 | if (!test_bit(HCI_UP, &hdev->flags)) { |
2189 | ret = -ENETDOWN; | |
1da177e4 | 2190 | goto done; |
808a049e | 2191 | } |
1da177e4 | 2192 | |
0736cfa8 MH |
2193 | if (test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) { |
2194 | ret = -EBUSY; | |
2195 | goto done; | |
2196 | } | |
2197 | ||
1da177e4 LT |
2198 | /* Drop queues */ |
2199 | skb_queue_purge(&hdev->rx_q); | |
2200 | skb_queue_purge(&hdev->cmd_q); | |
2201 | ||
09fd0de5 | 2202 | hci_dev_lock(hdev); |
1f9b9a5d | 2203 | hci_inquiry_cache_flush(hdev); |
1da177e4 | 2204 | hci_conn_hash_flush(hdev); |
09fd0de5 | 2205 | hci_dev_unlock(hdev); |
1da177e4 LT |
2206 | |
2207 | if (hdev->flush) | |
2208 | hdev->flush(hdev); | |
2209 | ||
8e87d142 | 2210 | atomic_set(&hdev->cmd_cnt, 1); |
6ed58ec5 | 2211 | hdev->acl_cnt = 0; hdev->sco_cnt = 0; hdev->le_cnt = 0; |
1da177e4 LT |
2212 | |
2213 | if (!test_bit(HCI_RAW, &hdev->flags)) | |
01178cd4 | 2214 | ret = __hci_req_sync(hdev, hci_reset_req, 0, HCI_INIT_TIMEOUT); |
1da177e4 LT |
2215 | |
2216 | done: | |
1da177e4 LT |
2217 | hci_req_unlock(hdev); |
2218 | hci_dev_put(hdev); | |
2219 | return ret; | |
2220 | } | |
2221 | ||
2222 | int hci_dev_reset_stat(__u16 dev) | |
2223 | { | |
2224 | struct hci_dev *hdev; | |
2225 | int ret = 0; | |
2226 | ||
70f23020 AE |
2227 | hdev = hci_dev_get(dev); |
2228 | if (!hdev) | |
1da177e4 LT |
2229 | return -ENODEV; |
2230 | ||
0736cfa8 MH |
2231 | if (test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) { |
2232 | ret = -EBUSY; | |
2233 | goto done; | |
2234 | } | |
2235 | ||
1da177e4 LT |
2236 | memset(&hdev->stat, 0, sizeof(struct hci_dev_stats)); |
2237 | ||
0736cfa8 | 2238 | done: |
1da177e4 | 2239 | hci_dev_put(hdev); |
1da177e4 LT |
2240 | return ret; |
2241 | } | |
2242 | ||
2243 | int hci_dev_cmd(unsigned int cmd, void __user *arg) | |
2244 | { | |
2245 | struct hci_dev *hdev; | |
2246 | struct hci_dev_req dr; | |
2247 | int err = 0; | |
2248 | ||
2249 | if (copy_from_user(&dr, arg, sizeof(dr))) | |
2250 | return -EFAULT; | |
2251 | ||
70f23020 AE |
2252 | hdev = hci_dev_get(dr.dev_id); |
2253 | if (!hdev) | |
1da177e4 LT |
2254 | return -ENODEV; |
2255 | ||
0736cfa8 MH |
2256 | if (test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) { |
2257 | err = -EBUSY; | |
2258 | goto done; | |
2259 | } | |
2260 | ||
5b69bef5 MH |
2261 | if (hdev->dev_type != HCI_BREDR) { |
2262 | err = -EOPNOTSUPP; | |
2263 | goto done; | |
2264 | } | |
2265 | ||
56f87901 JH |
2266 | if (!test_bit(HCI_BREDR_ENABLED, &hdev->dev_flags)) { |
2267 | err = -EOPNOTSUPP; | |
2268 | goto done; | |
2269 | } | |
2270 | ||
1da177e4 LT |
2271 | switch (cmd) { |
2272 | case HCISETAUTH: | |
01178cd4 JH |
2273 | err = hci_req_sync(hdev, hci_auth_req, dr.dev_opt, |
2274 | HCI_INIT_TIMEOUT); | |
1da177e4 LT |
2275 | break; |
2276 | ||
2277 | case HCISETENCRYPT: | |
2278 | if (!lmp_encrypt_capable(hdev)) { | |
2279 | err = -EOPNOTSUPP; | |
2280 | break; | |
2281 | } | |
2282 | ||
2283 | if (!test_bit(HCI_AUTH, &hdev->flags)) { | |
2284 | /* Auth must be enabled first */ | |
01178cd4 JH |
2285 | err = hci_req_sync(hdev, hci_auth_req, dr.dev_opt, |
2286 | HCI_INIT_TIMEOUT); | |
1da177e4 LT |
2287 | if (err) |
2288 | break; | |
2289 | } | |
2290 | ||
01178cd4 JH |
2291 | err = hci_req_sync(hdev, hci_encrypt_req, dr.dev_opt, |
2292 | HCI_INIT_TIMEOUT); | |
1da177e4 LT |
2293 | break; |
2294 | ||
2295 | case HCISETSCAN: | |
01178cd4 JH |
2296 | err = hci_req_sync(hdev, hci_scan_req, dr.dev_opt, |
2297 | HCI_INIT_TIMEOUT); | |
1da177e4 LT |
2298 | break; |
2299 | ||
1da177e4 | 2300 | case HCISETLINKPOL: |
01178cd4 JH |
2301 | err = hci_req_sync(hdev, hci_linkpol_req, dr.dev_opt, |
2302 | HCI_INIT_TIMEOUT); | |
1da177e4 LT |
2303 | break; |
2304 | ||
2305 | case HCISETLINKMODE: | |
e4e8e37c MH |
2306 | hdev->link_mode = ((__u16) dr.dev_opt) & |
2307 | (HCI_LM_MASTER | HCI_LM_ACCEPT); | |
2308 | break; | |
2309 | ||
2310 | case HCISETPTYPE: | |
2311 | hdev->pkt_type = (__u16) dr.dev_opt; | |
1da177e4 LT |
2312 | break; |
2313 | ||
2314 | case HCISETACLMTU: | |
e4e8e37c MH |
2315 | hdev->acl_mtu = *((__u16 *) &dr.dev_opt + 1); |
2316 | hdev->acl_pkts = *((__u16 *) &dr.dev_opt + 0); | |
1da177e4 LT |
2317 | break; |
2318 | ||
2319 | case HCISETSCOMTU: | |
e4e8e37c MH |
2320 | hdev->sco_mtu = *((__u16 *) &dr.dev_opt + 1); |
2321 | hdev->sco_pkts = *((__u16 *) &dr.dev_opt + 0); | |
1da177e4 LT |
2322 | break; |
2323 | ||
2324 | default: | |
2325 | err = -EINVAL; | |
2326 | break; | |
2327 | } | |
e4e8e37c | 2328 | |
0736cfa8 | 2329 | done: |
1da177e4 LT |
2330 | hci_dev_put(hdev); |
2331 | return err; | |
2332 | } | |
2333 | ||
2334 | int hci_get_dev_list(void __user *arg) | |
2335 | { | |
8035ded4 | 2336 | struct hci_dev *hdev; |
1da177e4 LT |
2337 | struct hci_dev_list_req *dl; |
2338 | struct hci_dev_req *dr; | |
1da177e4 LT |
2339 | int n = 0, size, err; |
2340 | __u16 dev_num; | |
2341 | ||
2342 | if (get_user(dev_num, (__u16 __user *) arg)) | |
2343 | return -EFAULT; | |
2344 | ||
2345 | if (!dev_num || dev_num > (PAGE_SIZE * 2) / sizeof(*dr)) | |
2346 | return -EINVAL; | |
2347 | ||
2348 | size = sizeof(*dl) + dev_num * sizeof(*dr); | |
2349 | ||
70f23020 AE |
2350 | dl = kzalloc(size, GFP_KERNEL); |
2351 | if (!dl) | |
1da177e4 LT |
2352 | return -ENOMEM; |
2353 | ||
2354 | dr = dl->dev_req; | |
2355 | ||
f20d09d5 | 2356 | read_lock(&hci_dev_list_lock); |
8035ded4 | 2357 | list_for_each_entry(hdev, &hci_dev_list, list) { |
a8b2d5c2 | 2358 | if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) |
e0f9309f | 2359 | cancel_delayed_work(&hdev->power_off); |
c542a06c | 2360 | |
a8b2d5c2 JH |
2361 | if (!test_bit(HCI_MGMT, &hdev->dev_flags)) |
2362 | set_bit(HCI_PAIRABLE, &hdev->dev_flags); | |
c542a06c | 2363 | |
1da177e4 LT |
2364 | (dr + n)->dev_id = hdev->id; |
2365 | (dr + n)->dev_opt = hdev->flags; | |
c542a06c | 2366 | |
1da177e4 LT |
2367 | if (++n >= dev_num) |
2368 | break; | |
2369 | } | |
f20d09d5 | 2370 | read_unlock(&hci_dev_list_lock); |
1da177e4 LT |
2371 | |
2372 | dl->dev_num = n; | |
2373 | size = sizeof(*dl) + n * sizeof(*dr); | |
2374 | ||
2375 | err = copy_to_user(arg, dl, size); | |
2376 | kfree(dl); | |
2377 | ||
2378 | return err ? -EFAULT : 0; | |
2379 | } | |
2380 | ||
2381 | int hci_get_dev_info(void __user *arg) | |
2382 | { | |
2383 | struct hci_dev *hdev; | |
2384 | struct hci_dev_info di; | |
2385 | int err = 0; | |
2386 | ||
2387 | if (copy_from_user(&di, arg, sizeof(di))) | |
2388 | return -EFAULT; | |
2389 | ||
70f23020 AE |
2390 | hdev = hci_dev_get(di.dev_id); |
2391 | if (!hdev) | |
1da177e4 LT |
2392 | return -ENODEV; |
2393 | ||
a8b2d5c2 | 2394 | if (test_and_clear_bit(HCI_AUTO_OFF, &hdev->dev_flags)) |
3243553f | 2395 | cancel_delayed_work_sync(&hdev->power_off); |
ab81cbf9 | 2396 | |
a8b2d5c2 JH |
2397 | if (!test_bit(HCI_MGMT, &hdev->dev_flags)) |
2398 | set_bit(HCI_PAIRABLE, &hdev->dev_flags); | |
c542a06c | 2399 | |
1da177e4 LT |
2400 | strcpy(di.name, hdev->name); |
2401 | di.bdaddr = hdev->bdaddr; | |
60f2a3ed | 2402 | di.type = (hdev->bus & 0x0f) | ((hdev->dev_type & 0x03) << 4); |
1da177e4 LT |
2403 | di.flags = hdev->flags; |
2404 | di.pkt_type = hdev->pkt_type; | |
572c7f84 JH |
2405 | if (lmp_bredr_capable(hdev)) { |
2406 | di.acl_mtu = hdev->acl_mtu; | |
2407 | di.acl_pkts = hdev->acl_pkts; | |
2408 | di.sco_mtu = hdev->sco_mtu; | |
2409 | di.sco_pkts = hdev->sco_pkts; | |
2410 | } else { | |
2411 | di.acl_mtu = hdev->le_mtu; | |
2412 | di.acl_pkts = hdev->le_pkts; | |
2413 | di.sco_mtu = 0; | |
2414 | di.sco_pkts = 0; | |
2415 | } | |
1da177e4 LT |
2416 | di.link_policy = hdev->link_policy; |
2417 | di.link_mode = hdev->link_mode; | |
2418 | ||
2419 | memcpy(&di.stat, &hdev->stat, sizeof(di.stat)); | |
2420 | memcpy(&di.features, &hdev->features, sizeof(di.features)); | |
2421 | ||
2422 | if (copy_to_user(arg, &di, sizeof(di))) | |
2423 | err = -EFAULT; | |
2424 | ||
2425 | hci_dev_put(hdev); | |
2426 | ||
2427 | return err; | |
2428 | } | |
2429 | ||
2430 | /* ---- Interface to HCI drivers ---- */ | |
2431 | ||
611b30f7 MH |
2432 | static int hci_rfkill_set_block(void *data, bool blocked) |
2433 | { | |
2434 | struct hci_dev *hdev = data; | |
2435 | ||
2436 | BT_DBG("%p name %s blocked %d", hdev, hdev->name, blocked); | |
2437 | ||
0736cfa8 MH |
2438 | if (test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) |
2439 | return -EBUSY; | |
2440 | ||
5e130367 JH |
2441 | if (blocked) { |
2442 | set_bit(HCI_RFKILLED, &hdev->dev_flags); | |
bf543036 JH |
2443 | if (!test_bit(HCI_SETUP, &hdev->dev_flags)) |
2444 | hci_dev_do_close(hdev); | |
5e130367 JH |
2445 | } else { |
2446 | clear_bit(HCI_RFKILLED, &hdev->dev_flags); | |
1025c04c | 2447 | } |
611b30f7 MH |
2448 | |
2449 | return 0; | |
2450 | } | |
2451 | ||
2452 | static const struct rfkill_ops hci_rfkill_ops = { | |
2453 | .set_block = hci_rfkill_set_block, | |
2454 | }; | |
2455 | ||
ab81cbf9 JH |
2456 | static void hci_power_on(struct work_struct *work) |
2457 | { | |
2458 | struct hci_dev *hdev = container_of(work, struct hci_dev, power_on); | |
96570ffc | 2459 | int err; |
ab81cbf9 JH |
2460 | |
2461 | BT_DBG("%s", hdev->name); | |
2462 | ||
cbed0ca1 | 2463 | err = hci_dev_do_open(hdev); |
96570ffc JH |
2464 | if (err < 0) { |
2465 | mgmt_set_powered_failed(hdev, err); | |
ab81cbf9 | 2466 | return; |
96570ffc | 2467 | } |
ab81cbf9 | 2468 | |
a5c8f270 MH |
2469 | /* During the HCI setup phase, a few error conditions are |
2470 | * ignored and they need to be checked now. If they are still | |
2471 | * valid, it is important to turn the device back off. | |
2472 | */ | |
2473 | if (test_bit(HCI_RFKILLED, &hdev->dev_flags) || | |
2474 | (hdev->dev_type == HCI_BREDR && | |
2475 | !bacmp(&hdev->bdaddr, BDADDR_ANY) && | |
2476 | !bacmp(&hdev->static_addr, BDADDR_ANY))) { | |
bf543036 JH |
2477 | clear_bit(HCI_AUTO_OFF, &hdev->dev_flags); |
2478 | hci_dev_do_close(hdev); | |
2479 | } else if (test_bit(HCI_AUTO_OFF, &hdev->dev_flags)) { | |
19202573 JH |
2480 | queue_delayed_work(hdev->req_workqueue, &hdev->power_off, |
2481 | HCI_AUTO_OFF_TIMEOUT); | |
bf543036 | 2482 | } |
ab81cbf9 | 2483 | |
a8b2d5c2 | 2484 | if (test_and_clear_bit(HCI_SETUP, &hdev->dev_flags)) |
744cf19e | 2485 | mgmt_index_added(hdev); |
ab81cbf9 JH |
2486 | } |
2487 | ||
2488 | static void hci_power_off(struct work_struct *work) | |
2489 | { | |
3243553f | 2490 | struct hci_dev *hdev = container_of(work, struct hci_dev, |
a8c5fb1a | 2491 | power_off.work); |
ab81cbf9 JH |
2492 | |
2493 | BT_DBG("%s", hdev->name); | |
2494 | ||
8ee56540 | 2495 | hci_dev_do_close(hdev); |
ab81cbf9 JH |
2496 | } |
2497 | ||
16ab91ab JH |
2498 | static void hci_discov_off(struct work_struct *work) |
2499 | { | |
2500 | struct hci_dev *hdev; | |
16ab91ab JH |
2501 | |
2502 | hdev = container_of(work, struct hci_dev, discov_off.work); | |
2503 | ||
2504 | BT_DBG("%s", hdev->name); | |
2505 | ||
d1967ff8 | 2506 | mgmt_discoverable_timeout(hdev); |
16ab91ab JH |
2507 | } |
2508 | ||
35f7498a | 2509 | void hci_uuids_clear(struct hci_dev *hdev) |
2aeb9a1a | 2510 | { |
4821002c | 2511 | struct bt_uuid *uuid, *tmp; |
2aeb9a1a | 2512 | |
4821002c JH |
2513 | list_for_each_entry_safe(uuid, tmp, &hdev->uuids, list) { |
2514 | list_del(&uuid->list); | |
2aeb9a1a JH |
2515 | kfree(uuid); |
2516 | } | |
2aeb9a1a JH |
2517 | } |
2518 | ||
35f7498a | 2519 | void hci_link_keys_clear(struct hci_dev *hdev) |
55ed8ca1 JH |
2520 | { |
2521 | struct list_head *p, *n; | |
2522 | ||
2523 | list_for_each_safe(p, n, &hdev->link_keys) { | |
2524 | struct link_key *key; | |
2525 | ||
2526 | key = list_entry(p, struct link_key, list); | |
2527 | ||
2528 | list_del(p); | |
2529 | kfree(key); | |
2530 | } | |
55ed8ca1 JH |
2531 | } |
2532 | ||
35f7498a | 2533 | void hci_smp_ltks_clear(struct hci_dev *hdev) |
b899efaf VCG |
2534 | { |
2535 | struct smp_ltk *k, *tmp; | |
2536 | ||
2537 | list_for_each_entry_safe(k, tmp, &hdev->long_term_keys, list) { | |
2538 | list_del(&k->list); | |
2539 | kfree(k); | |
2540 | } | |
b899efaf VCG |
2541 | } |
2542 | ||
970c4e46 JH |
2543 | void hci_smp_irks_clear(struct hci_dev *hdev) |
2544 | { | |
2545 | struct smp_irk *k, *tmp; | |
2546 | ||
2547 | list_for_each_entry_safe(k, tmp, &hdev->identity_resolving_keys, list) { | |
2548 | list_del(&k->list); | |
2549 | kfree(k); | |
2550 | } | |
2551 | } | |
2552 | ||
55ed8ca1 JH |
2553 | struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr) |
2554 | { | |
8035ded4 | 2555 | struct link_key *k; |
55ed8ca1 | 2556 | |
8035ded4 | 2557 | list_for_each_entry(k, &hdev->link_keys, list) |
55ed8ca1 JH |
2558 | if (bacmp(bdaddr, &k->bdaddr) == 0) |
2559 | return k; | |
55ed8ca1 JH |
2560 | |
2561 | return NULL; | |
2562 | } | |
2563 | ||
745c0ce3 | 2564 | static bool hci_persistent_key(struct hci_dev *hdev, struct hci_conn *conn, |
a8c5fb1a | 2565 | u8 key_type, u8 old_key_type) |
d25e28ab JH |
2566 | { |
2567 | /* Legacy key */ | |
2568 | if (key_type < 0x03) | |
745c0ce3 | 2569 | return true; |
d25e28ab JH |
2570 | |
2571 | /* Debug keys are insecure so don't store them persistently */ | |
2572 | if (key_type == HCI_LK_DEBUG_COMBINATION) | |
745c0ce3 | 2573 | return false; |
d25e28ab JH |
2574 | |
2575 | /* Changed combination key and there's no previous one */ | |
2576 | if (key_type == HCI_LK_CHANGED_COMBINATION && old_key_type == 0xff) | |
745c0ce3 | 2577 | return false; |
d25e28ab JH |
2578 | |
2579 | /* Security mode 3 case */ | |
2580 | if (!conn) | |
745c0ce3 | 2581 | return true; |
d25e28ab JH |
2582 | |
2583 | /* Neither local nor remote side had no-bonding as requirement */ | |
2584 | if (conn->auth_type > 0x01 && conn->remote_auth > 0x01) | |
745c0ce3 | 2585 | return true; |
d25e28ab JH |
2586 | |
2587 | /* Local side had dedicated bonding as requirement */ | |
2588 | if (conn->auth_type == 0x02 || conn->auth_type == 0x03) | |
745c0ce3 | 2589 | return true; |
d25e28ab JH |
2590 | |
2591 | /* Remote side had dedicated bonding as requirement */ | |
2592 | if (conn->remote_auth == 0x02 || conn->remote_auth == 0x03) | |
745c0ce3 | 2593 | return true; |
d25e28ab JH |
2594 | |
2595 | /* If none of the above criteria match, then don't store the key | |
2596 | * persistently */ | |
745c0ce3 | 2597 | return false; |
d25e28ab JH |
2598 | } |
2599 | ||
98a0b845 JH |
2600 | static bool ltk_type_master(u8 type) |
2601 | { | |
2602 | if (type == HCI_SMP_STK || type == HCI_SMP_LTK) | |
2603 | return true; | |
2604 | ||
2605 | return false; | |
2606 | } | |
2607 | ||
2608 | struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, __le16 ediv, u8 rand[8], | |
2609 | bool master) | |
75d262c2 | 2610 | { |
c9839a11 | 2611 | struct smp_ltk *k; |
75d262c2 | 2612 | |
c9839a11 VCG |
2613 | list_for_each_entry(k, &hdev->long_term_keys, list) { |
2614 | if (k->ediv != ediv || | |
a8c5fb1a | 2615 | memcmp(rand, k->rand, sizeof(k->rand))) |
75d262c2 VCG |
2616 | continue; |
2617 | ||
98a0b845 JH |
2618 | if (ltk_type_master(k->type) != master) |
2619 | continue; | |
2620 | ||
c9839a11 | 2621 | return k; |
75d262c2 VCG |
2622 | } |
2623 | ||
2624 | return NULL; | |
2625 | } | |
75d262c2 | 2626 | |
c9839a11 | 2627 | struct smp_ltk *hci_find_ltk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr, |
98a0b845 | 2628 | u8 addr_type, bool master) |
75d262c2 | 2629 | { |
c9839a11 | 2630 | struct smp_ltk *k; |
75d262c2 | 2631 | |
c9839a11 VCG |
2632 | list_for_each_entry(k, &hdev->long_term_keys, list) |
2633 | if (addr_type == k->bdaddr_type && | |
98a0b845 JH |
2634 | bacmp(bdaddr, &k->bdaddr) == 0 && |
2635 | ltk_type_master(k->type) == master) | |
75d262c2 VCG |
2636 | return k; |
2637 | ||
2638 | return NULL; | |
2639 | } | |
75d262c2 | 2640 | |
970c4e46 JH |
2641 | struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa) |
2642 | { | |
2643 | struct smp_irk *irk; | |
2644 | ||
2645 | list_for_each_entry(irk, &hdev->identity_resolving_keys, list) { | |
2646 | if (!bacmp(&irk->rpa, rpa)) | |
2647 | return irk; | |
2648 | } | |
2649 | ||
2650 | list_for_each_entry(irk, &hdev->identity_resolving_keys, list) { | |
2651 | if (smp_irk_matches(hdev->tfm_aes, irk->val, rpa)) { | |
2652 | bacpy(&irk->rpa, rpa); | |
2653 | return irk; | |
2654 | } | |
2655 | } | |
2656 | ||
2657 | return NULL; | |
2658 | } | |
2659 | ||
2660 | struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr, | |
2661 | u8 addr_type) | |
2662 | { | |
2663 | struct smp_irk *irk; | |
2664 | ||
2665 | list_for_each_entry(irk, &hdev->identity_resolving_keys, list) { | |
2666 | if (addr_type == irk->addr_type && | |
2667 | bacmp(bdaddr, &irk->bdaddr) == 0) | |
2668 | return irk; | |
2669 | } | |
2670 | ||
2671 | return NULL; | |
2672 | } | |
2673 | ||
d25e28ab | 2674 | int hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, int new_key, |
04124681 | 2675 | bdaddr_t *bdaddr, u8 *val, u8 type, u8 pin_len) |
55ed8ca1 JH |
2676 | { |
2677 | struct link_key *key, *old_key; | |
745c0ce3 VA |
2678 | u8 old_key_type; |
2679 | bool persistent; | |
55ed8ca1 JH |
2680 | |
2681 | old_key = hci_find_link_key(hdev, bdaddr); | |
2682 | if (old_key) { | |
2683 | old_key_type = old_key->type; | |
2684 | key = old_key; | |
2685 | } else { | |
12adcf3a | 2686 | old_key_type = conn ? conn->key_type : 0xff; |
55ed8ca1 JH |
2687 | key = kzalloc(sizeof(*key), GFP_ATOMIC); |
2688 | if (!key) | |
2689 | return -ENOMEM; | |
2690 | list_add(&key->list, &hdev->link_keys); | |
2691 | } | |
2692 | ||
6ed93dc6 | 2693 | BT_DBG("%s key for %pMR type %u", hdev->name, bdaddr, type); |
55ed8ca1 | 2694 | |
d25e28ab JH |
2695 | /* Some buggy controller combinations generate a changed |
2696 | * combination key for legacy pairing even when there's no | |
2697 | * previous key */ | |
2698 | if (type == HCI_LK_CHANGED_COMBINATION && | |
a8c5fb1a | 2699 | (!conn || conn->remote_auth == 0xff) && old_key_type == 0xff) { |
d25e28ab | 2700 | type = HCI_LK_COMBINATION; |
655fe6ec JH |
2701 | if (conn) |
2702 | conn->key_type = type; | |
2703 | } | |
d25e28ab | 2704 | |
55ed8ca1 | 2705 | bacpy(&key->bdaddr, bdaddr); |
9b3b4460 | 2706 | memcpy(key->val, val, HCI_LINK_KEY_SIZE); |
55ed8ca1 JH |
2707 | key->pin_len = pin_len; |
2708 | ||
b6020ba0 | 2709 | if (type == HCI_LK_CHANGED_COMBINATION) |
55ed8ca1 | 2710 | key->type = old_key_type; |
4748fed2 JH |
2711 | else |
2712 | key->type = type; | |
2713 | ||
4df378a1 JH |
2714 | if (!new_key) |
2715 | return 0; | |
2716 | ||
2717 | persistent = hci_persistent_key(hdev, conn, type, old_key_type); | |
2718 | ||
744cf19e | 2719 | mgmt_new_link_key(hdev, key, persistent); |
4df378a1 | 2720 | |
6ec5bcad VA |
2721 | if (conn) |
2722 | conn->flush_key = !persistent; | |
55ed8ca1 JH |
2723 | |
2724 | return 0; | |
2725 | } | |
2726 | ||
c9839a11 | 2727 | int hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type, u8 type, |
9a006657 | 2728 | int new_key, u8 authenticated, u8 tk[16], u8 enc_size, __le16 |
04124681 | 2729 | ediv, u8 rand[8]) |
75d262c2 | 2730 | { |
c9839a11 | 2731 | struct smp_ltk *key, *old_key; |
98a0b845 | 2732 | bool master = ltk_type_master(type); |
0fe442ff | 2733 | u8 persistent; |
75d262c2 | 2734 | |
98a0b845 | 2735 | old_key = hci_find_ltk_by_addr(hdev, bdaddr, addr_type, master); |
c9839a11 | 2736 | if (old_key) |
75d262c2 | 2737 | key = old_key; |
c9839a11 VCG |
2738 | else { |
2739 | key = kzalloc(sizeof(*key), GFP_ATOMIC); | |
75d262c2 VCG |
2740 | if (!key) |
2741 | return -ENOMEM; | |
c9839a11 | 2742 | list_add(&key->list, &hdev->long_term_keys); |
75d262c2 VCG |
2743 | } |
2744 | ||
75d262c2 | 2745 | bacpy(&key->bdaddr, bdaddr); |
c9839a11 VCG |
2746 | key->bdaddr_type = addr_type; |
2747 | memcpy(key->val, tk, sizeof(key->val)); | |
2748 | key->authenticated = authenticated; | |
2749 | key->ediv = ediv; | |
2750 | key->enc_size = enc_size; | |
2751 | key->type = type; | |
2752 | memcpy(key->rand, rand, sizeof(key->rand)); | |
75d262c2 | 2753 | |
c9839a11 VCG |
2754 | if (!new_key) |
2755 | return 0; | |
75d262c2 | 2756 | |
0fe442ff MH |
2757 | if (addr_type == ADDR_LE_DEV_RANDOM && (bdaddr->b[5] & 0xc0) != 0xc0) |
2758 | persistent = 0; | |
2759 | else | |
2760 | persistent = 1; | |
2761 | ||
21b93b75 | 2762 | if (type == HCI_SMP_LTK || type == HCI_SMP_LTK_SLAVE) |
0fe442ff | 2763 | mgmt_new_ltk(hdev, key, persistent); |
261cc5aa | 2764 | |
75d262c2 VCG |
2765 | return 0; |
2766 | } | |
2767 | ||
970c4e46 JH |
2768 | int hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type, |
2769 | u8 val[16], bdaddr_t *rpa) | |
2770 | { | |
2771 | struct smp_irk *irk; | |
2772 | ||
2773 | irk = hci_find_irk_by_addr(hdev, bdaddr, addr_type); | |
2774 | if (!irk) { | |
2775 | irk = kzalloc(sizeof(*irk), GFP_KERNEL); | |
2776 | if (!irk) | |
2777 | return -ENOMEM; | |
2778 | ||
2779 | bacpy(&irk->bdaddr, bdaddr); | |
2780 | irk->addr_type = addr_type; | |
2781 | ||
2782 | list_add(&irk->list, &hdev->identity_resolving_keys); | |
2783 | } | |
2784 | ||
2785 | memcpy(irk->val, val, 16); | |
2786 | bacpy(&irk->rpa, rpa); | |
2787 | ||
2788 | return 0; | |
2789 | } | |
2790 | ||
55ed8ca1 JH |
2791 | int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr) |
2792 | { | |
2793 | struct link_key *key; | |
2794 | ||
2795 | key = hci_find_link_key(hdev, bdaddr); | |
2796 | if (!key) | |
2797 | return -ENOENT; | |
2798 | ||
6ed93dc6 | 2799 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); |
55ed8ca1 JH |
2800 | |
2801 | list_del(&key->list); | |
2802 | kfree(key); | |
2803 | ||
2804 | return 0; | |
2805 | } | |
2806 | ||
e0b2b27e | 2807 | int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type) |
b899efaf VCG |
2808 | { |
2809 | struct smp_ltk *k, *tmp; | |
c51ffa0b | 2810 | int removed = 0; |
b899efaf VCG |
2811 | |
2812 | list_for_each_entry_safe(k, tmp, &hdev->long_term_keys, list) { | |
e0b2b27e | 2813 | if (bacmp(bdaddr, &k->bdaddr) || k->bdaddr_type != bdaddr_type) |
b899efaf VCG |
2814 | continue; |
2815 | ||
6ed93dc6 | 2816 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); |
b899efaf VCG |
2817 | |
2818 | list_del(&k->list); | |
2819 | kfree(k); | |
c51ffa0b | 2820 | removed++; |
b899efaf VCG |
2821 | } |
2822 | ||
c51ffa0b | 2823 | return removed ? 0 : -ENOENT; |
b899efaf VCG |
2824 | } |
2825 | ||
6bd32326 | 2826 | /* HCI command timer function */ |
bda4f23a | 2827 | static void hci_cmd_timeout(unsigned long arg) |
6bd32326 VT |
2828 | { |
2829 | struct hci_dev *hdev = (void *) arg; | |
2830 | ||
bda4f23a AE |
2831 | if (hdev->sent_cmd) { |
2832 | struct hci_command_hdr *sent = (void *) hdev->sent_cmd->data; | |
2833 | u16 opcode = __le16_to_cpu(sent->opcode); | |
2834 | ||
2835 | BT_ERR("%s command 0x%4.4x tx timeout", hdev->name, opcode); | |
2836 | } else { | |
2837 | BT_ERR("%s command tx timeout", hdev->name); | |
2838 | } | |
2839 | ||
6bd32326 | 2840 | atomic_set(&hdev->cmd_cnt, 1); |
c347b765 | 2841 | queue_work(hdev->workqueue, &hdev->cmd_work); |
6bd32326 VT |
2842 | } |
2843 | ||
2763eda6 | 2844 | struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev, |
04124681 | 2845 | bdaddr_t *bdaddr) |
2763eda6 SJ |
2846 | { |
2847 | struct oob_data *data; | |
2848 | ||
2849 | list_for_each_entry(data, &hdev->remote_oob_data, list) | |
2850 | if (bacmp(bdaddr, &data->bdaddr) == 0) | |
2851 | return data; | |
2852 | ||
2853 | return NULL; | |
2854 | } | |
2855 | ||
2856 | int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr) | |
2857 | { | |
2858 | struct oob_data *data; | |
2859 | ||
2860 | data = hci_find_remote_oob_data(hdev, bdaddr); | |
2861 | if (!data) | |
2862 | return -ENOENT; | |
2863 | ||
6ed93dc6 | 2864 | BT_DBG("%s removing %pMR", hdev->name, bdaddr); |
2763eda6 SJ |
2865 | |
2866 | list_del(&data->list); | |
2867 | kfree(data); | |
2868 | ||
2869 | return 0; | |
2870 | } | |
2871 | ||
35f7498a | 2872 | void hci_remote_oob_data_clear(struct hci_dev *hdev) |
2763eda6 SJ |
2873 | { |
2874 | struct oob_data *data, *n; | |
2875 | ||
2876 | list_for_each_entry_safe(data, n, &hdev->remote_oob_data, list) { | |
2877 | list_del(&data->list); | |
2878 | kfree(data); | |
2879 | } | |
2763eda6 SJ |
2880 | } |
2881 | ||
0798872e MH |
2882 | int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, |
2883 | u8 *hash, u8 *randomizer) | |
2763eda6 SJ |
2884 | { |
2885 | struct oob_data *data; | |
2886 | ||
2887 | data = hci_find_remote_oob_data(hdev, bdaddr); | |
2763eda6 | 2888 | if (!data) { |
0798872e | 2889 | data = kmalloc(sizeof(*data), GFP_ATOMIC); |
2763eda6 SJ |
2890 | if (!data) |
2891 | return -ENOMEM; | |
2892 | ||
2893 | bacpy(&data->bdaddr, bdaddr); | |
2894 | list_add(&data->list, &hdev->remote_oob_data); | |
2895 | } | |
2896 | ||
519ca9d0 MH |
2897 | memcpy(data->hash192, hash, sizeof(data->hash192)); |
2898 | memcpy(data->randomizer192, randomizer, sizeof(data->randomizer192)); | |
2763eda6 | 2899 | |
0798872e MH |
2900 | memset(data->hash256, 0, sizeof(data->hash256)); |
2901 | memset(data->randomizer256, 0, sizeof(data->randomizer256)); | |
2902 | ||
2903 | BT_DBG("%s for %pMR", hdev->name, bdaddr); | |
2904 | ||
2905 | return 0; | |
2906 | } | |
2907 | ||
2908 | int hci_add_remote_oob_ext_data(struct hci_dev *hdev, bdaddr_t *bdaddr, | |
2909 | u8 *hash192, u8 *randomizer192, | |
2910 | u8 *hash256, u8 *randomizer256) | |
2911 | { | |
2912 | struct oob_data *data; | |
2913 | ||
2914 | data = hci_find_remote_oob_data(hdev, bdaddr); | |
2915 | if (!data) { | |
2916 | data = kmalloc(sizeof(*data), GFP_ATOMIC); | |
2917 | if (!data) | |
2918 | return -ENOMEM; | |
2919 | ||
2920 | bacpy(&data->bdaddr, bdaddr); | |
2921 | list_add(&data->list, &hdev->remote_oob_data); | |
2922 | } | |
2923 | ||
2924 | memcpy(data->hash192, hash192, sizeof(data->hash192)); | |
2925 | memcpy(data->randomizer192, randomizer192, sizeof(data->randomizer192)); | |
2926 | ||
2927 | memcpy(data->hash256, hash256, sizeof(data->hash256)); | |
2928 | memcpy(data->randomizer256, randomizer256, sizeof(data->randomizer256)); | |
2929 | ||
6ed93dc6 | 2930 | BT_DBG("%s for %pMR", hdev->name, bdaddr); |
2763eda6 SJ |
2931 | |
2932 | return 0; | |
2933 | } | |
2934 | ||
b9ee0a78 MH |
2935 | struct bdaddr_list *hci_blacklist_lookup(struct hci_dev *hdev, |
2936 | bdaddr_t *bdaddr, u8 type) | |
b2a66aad | 2937 | { |
8035ded4 | 2938 | struct bdaddr_list *b; |
b2a66aad | 2939 | |
b9ee0a78 MH |
2940 | list_for_each_entry(b, &hdev->blacklist, list) { |
2941 | if (!bacmp(&b->bdaddr, bdaddr) && b->bdaddr_type == type) | |
b2a66aad | 2942 | return b; |
b9ee0a78 | 2943 | } |
b2a66aad AJ |
2944 | |
2945 | return NULL; | |
2946 | } | |
2947 | ||
35f7498a | 2948 | void hci_blacklist_clear(struct hci_dev *hdev) |
b2a66aad AJ |
2949 | { |
2950 | struct list_head *p, *n; | |
2951 | ||
2952 | list_for_each_safe(p, n, &hdev->blacklist) { | |
b9ee0a78 | 2953 | struct bdaddr_list *b = list_entry(p, struct bdaddr_list, list); |
b2a66aad AJ |
2954 | |
2955 | list_del(p); | |
2956 | kfree(b); | |
2957 | } | |
b2a66aad AJ |
2958 | } |
2959 | ||
88c1fe4b | 2960 | int hci_blacklist_add(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type) |
b2a66aad AJ |
2961 | { |
2962 | struct bdaddr_list *entry; | |
b2a66aad | 2963 | |
b9ee0a78 | 2964 | if (!bacmp(bdaddr, BDADDR_ANY)) |
b2a66aad AJ |
2965 | return -EBADF; |
2966 | ||
b9ee0a78 | 2967 | if (hci_blacklist_lookup(hdev, bdaddr, type)) |
5e762444 | 2968 | return -EEXIST; |
b2a66aad AJ |
2969 | |
2970 | entry = kzalloc(sizeof(struct bdaddr_list), GFP_KERNEL); | |
5e762444 AJ |
2971 | if (!entry) |
2972 | return -ENOMEM; | |
b2a66aad AJ |
2973 | |
2974 | bacpy(&entry->bdaddr, bdaddr); | |
b9ee0a78 | 2975 | entry->bdaddr_type = type; |
b2a66aad AJ |
2976 | |
2977 | list_add(&entry->list, &hdev->blacklist); | |
2978 | ||
88c1fe4b | 2979 | return mgmt_device_blocked(hdev, bdaddr, type); |
b2a66aad AJ |
2980 | } |
2981 | ||
88c1fe4b | 2982 | int hci_blacklist_del(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type) |
b2a66aad AJ |
2983 | { |
2984 | struct bdaddr_list *entry; | |
b2a66aad | 2985 | |
35f7498a JH |
2986 | if (!bacmp(bdaddr, BDADDR_ANY)) { |
2987 | hci_blacklist_clear(hdev); | |
2988 | return 0; | |
2989 | } | |
b2a66aad | 2990 | |
b9ee0a78 | 2991 | entry = hci_blacklist_lookup(hdev, bdaddr, type); |
1ec918ce | 2992 | if (!entry) |
5e762444 | 2993 | return -ENOENT; |
b2a66aad AJ |
2994 | |
2995 | list_del(&entry->list); | |
2996 | kfree(entry); | |
2997 | ||
88c1fe4b | 2998 | return mgmt_device_unblocked(hdev, bdaddr, type); |
b2a66aad AJ |
2999 | } |
3000 | ||
15819a70 AG |
3001 | /* This function requires the caller holds hdev->lock */ |
3002 | struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev, | |
3003 | bdaddr_t *addr, u8 addr_type) | |
3004 | { | |
3005 | struct hci_conn_params *params; | |
3006 | ||
3007 | list_for_each_entry(params, &hdev->le_conn_params, list) { | |
3008 | if (bacmp(¶ms->addr, addr) == 0 && | |
3009 | params->addr_type == addr_type) { | |
3010 | return params; | |
3011 | } | |
3012 | } | |
3013 | ||
3014 | return NULL; | |
3015 | } | |
3016 | ||
3017 | /* This function requires the caller holds hdev->lock */ | |
3018 | void hci_conn_params_add(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type, | |
3019 | u16 conn_min_interval, u16 conn_max_interval) | |
3020 | { | |
3021 | struct hci_conn_params *params; | |
3022 | ||
3023 | params = hci_conn_params_lookup(hdev, addr, addr_type); | |
3024 | if (params) { | |
3025 | params->conn_min_interval = conn_min_interval; | |
3026 | params->conn_max_interval = conn_max_interval; | |
3027 | return; | |
3028 | } | |
3029 | ||
3030 | params = kzalloc(sizeof(*params), GFP_KERNEL); | |
3031 | if (!params) { | |
3032 | BT_ERR("Out of memory"); | |
3033 | return; | |
3034 | } | |
3035 | ||
3036 | bacpy(¶ms->addr, addr); | |
3037 | params->addr_type = addr_type; | |
3038 | params->conn_min_interval = conn_min_interval; | |
3039 | params->conn_max_interval = conn_max_interval; | |
3040 | ||
3041 | list_add(¶ms->list, &hdev->le_conn_params); | |
3042 | ||
3043 | BT_DBG("addr %pMR (type %u) conn_min_interval 0x%.4x " | |
3044 | "conn_max_interval 0x%.4x", addr, addr_type, conn_min_interval, | |
3045 | conn_max_interval); | |
3046 | } | |
3047 | ||
3048 | /* This function requires the caller holds hdev->lock */ | |
3049 | void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type) | |
3050 | { | |
3051 | struct hci_conn_params *params; | |
3052 | ||
3053 | params = hci_conn_params_lookup(hdev, addr, addr_type); | |
3054 | if (!params) | |
3055 | return; | |
3056 | ||
3057 | list_del(¶ms->list); | |
3058 | kfree(params); | |
3059 | ||
3060 | BT_DBG("addr %pMR (type %u)", addr, addr_type); | |
3061 | } | |
3062 | ||
3063 | /* This function requires the caller holds hdev->lock */ | |
3064 | void hci_conn_params_clear(struct hci_dev *hdev) | |
3065 | { | |
3066 | struct hci_conn_params *params, *tmp; | |
3067 | ||
3068 | list_for_each_entry_safe(params, tmp, &hdev->le_conn_params, list) { | |
3069 | list_del(¶ms->list); | |
3070 | kfree(params); | |
3071 | } | |
3072 | ||
3073 | BT_DBG("All LE connection parameters were removed"); | |
3074 | } | |
3075 | ||
4c87eaab | 3076 | static void inquiry_complete(struct hci_dev *hdev, u8 status) |
7ba8b4be | 3077 | { |
4c87eaab AG |
3078 | if (status) { |
3079 | BT_ERR("Failed to start inquiry: status %d", status); | |
7ba8b4be | 3080 | |
4c87eaab AG |
3081 | hci_dev_lock(hdev); |
3082 | hci_discovery_set_state(hdev, DISCOVERY_STOPPED); | |
3083 | hci_dev_unlock(hdev); | |
3084 | return; | |
3085 | } | |
7ba8b4be AG |
3086 | } |
3087 | ||
4c87eaab | 3088 | static void le_scan_disable_work_complete(struct hci_dev *hdev, u8 status) |
7ba8b4be | 3089 | { |
4c87eaab AG |
3090 | /* General inquiry access code (GIAC) */ |
3091 | u8 lap[3] = { 0x33, 0x8b, 0x9e }; | |
3092 | struct hci_request req; | |
3093 | struct hci_cp_inquiry cp; | |
7ba8b4be AG |
3094 | int err; |
3095 | ||
4c87eaab AG |
3096 | if (status) { |
3097 | BT_ERR("Failed to disable LE scanning: status %d", status); | |
3098 | return; | |
3099 | } | |
7ba8b4be | 3100 | |
4c87eaab AG |
3101 | switch (hdev->discovery.type) { |
3102 | case DISCOV_TYPE_LE: | |
3103 | hci_dev_lock(hdev); | |
3104 | hci_discovery_set_state(hdev, DISCOVERY_STOPPED); | |
3105 | hci_dev_unlock(hdev); | |
3106 | break; | |
7ba8b4be | 3107 | |
4c87eaab AG |
3108 | case DISCOV_TYPE_INTERLEAVED: |
3109 | hci_req_init(&req, hdev); | |
7ba8b4be | 3110 | |
4c87eaab AG |
3111 | memset(&cp, 0, sizeof(cp)); |
3112 | memcpy(&cp.lap, lap, sizeof(cp.lap)); | |
3113 | cp.length = DISCOV_INTERLEAVED_INQUIRY_LEN; | |
3114 | hci_req_add(&req, HCI_OP_INQUIRY, sizeof(cp), &cp); | |
7ba8b4be | 3115 | |
4c87eaab | 3116 | hci_dev_lock(hdev); |
7dbfac1d | 3117 | |
4c87eaab | 3118 | hci_inquiry_cache_flush(hdev); |
7dbfac1d | 3119 | |
4c87eaab AG |
3120 | err = hci_req_run(&req, inquiry_complete); |
3121 | if (err) { | |
3122 | BT_ERR("Inquiry request failed: err %d", err); | |
3123 | hci_discovery_set_state(hdev, DISCOVERY_STOPPED); | |
3124 | } | |
7dbfac1d | 3125 | |
4c87eaab AG |
3126 | hci_dev_unlock(hdev); |
3127 | break; | |
7dbfac1d | 3128 | } |
7dbfac1d AG |
3129 | } |
3130 | ||
7ba8b4be AG |
3131 | static void le_scan_disable_work(struct work_struct *work) |
3132 | { | |
3133 | struct hci_dev *hdev = container_of(work, struct hci_dev, | |
04124681 | 3134 | le_scan_disable.work); |
7ba8b4be | 3135 | struct hci_cp_le_set_scan_enable cp; |
4c87eaab AG |
3136 | struct hci_request req; |
3137 | int err; | |
7ba8b4be AG |
3138 | |
3139 | BT_DBG("%s", hdev->name); | |
3140 | ||
4c87eaab | 3141 | hci_req_init(&req, hdev); |
28b75a89 | 3142 | |
7ba8b4be | 3143 | memset(&cp, 0, sizeof(cp)); |
4c87eaab AG |
3144 | cp.enable = LE_SCAN_DISABLE; |
3145 | hci_req_add(&req, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(cp), &cp); | |
28b75a89 | 3146 | |
4c87eaab AG |
3147 | err = hci_req_run(&req, le_scan_disable_work_complete); |
3148 | if (err) | |
3149 | BT_ERR("Disable LE scanning request failed: err %d", err); | |
28b75a89 AG |
3150 | } |
3151 | ||
9be0dab7 DH |
3152 | /* Alloc HCI device */ |
3153 | struct hci_dev *hci_alloc_dev(void) | |
3154 | { | |
3155 | struct hci_dev *hdev; | |
3156 | ||
3157 | hdev = kzalloc(sizeof(struct hci_dev), GFP_KERNEL); | |
3158 | if (!hdev) | |
3159 | return NULL; | |
3160 | ||
b1b813d4 DH |
3161 | hdev->pkt_type = (HCI_DM1 | HCI_DH1 | HCI_HV1); |
3162 | hdev->esco_type = (ESCO_HV1); | |
3163 | hdev->link_mode = (HCI_LM_ACCEPT); | |
b4cb9fb2 MH |
3164 | hdev->num_iac = 0x01; /* One IAC support is mandatory */ |
3165 | hdev->io_capability = 0x03; /* No Input No Output */ | |
bbaf444a JH |
3166 | hdev->inq_tx_power = HCI_TX_POWER_INVALID; |
3167 | hdev->adv_tx_power = HCI_TX_POWER_INVALID; | |
b1b813d4 | 3168 | |
b1b813d4 DH |
3169 | hdev->sniff_max_interval = 800; |
3170 | hdev->sniff_min_interval = 80; | |
3171 | ||
bef64738 MH |
3172 | hdev->le_scan_interval = 0x0060; |
3173 | hdev->le_scan_window = 0x0030; | |
4e70c7e7 MH |
3174 | hdev->le_conn_min_interval = 0x0028; |
3175 | hdev->le_conn_max_interval = 0x0038; | |
bef64738 | 3176 | |
b1b813d4 DH |
3177 | mutex_init(&hdev->lock); |
3178 | mutex_init(&hdev->req_lock); | |
3179 | ||
3180 | INIT_LIST_HEAD(&hdev->mgmt_pending); | |
3181 | INIT_LIST_HEAD(&hdev->blacklist); | |
3182 | INIT_LIST_HEAD(&hdev->uuids); | |
3183 | INIT_LIST_HEAD(&hdev->link_keys); | |
3184 | INIT_LIST_HEAD(&hdev->long_term_keys); | |
970c4e46 | 3185 | INIT_LIST_HEAD(&hdev->identity_resolving_keys); |
b1b813d4 | 3186 | INIT_LIST_HEAD(&hdev->remote_oob_data); |
15819a70 | 3187 | INIT_LIST_HEAD(&hdev->le_conn_params); |
6b536b5e | 3188 | INIT_LIST_HEAD(&hdev->conn_hash.list); |
b1b813d4 DH |
3189 | |
3190 | INIT_WORK(&hdev->rx_work, hci_rx_work); | |
3191 | INIT_WORK(&hdev->cmd_work, hci_cmd_work); | |
3192 | INIT_WORK(&hdev->tx_work, hci_tx_work); | |
3193 | INIT_WORK(&hdev->power_on, hci_power_on); | |
b1b813d4 | 3194 | |
b1b813d4 DH |
3195 | INIT_DELAYED_WORK(&hdev->power_off, hci_power_off); |
3196 | INIT_DELAYED_WORK(&hdev->discov_off, hci_discov_off); | |
3197 | INIT_DELAYED_WORK(&hdev->le_scan_disable, le_scan_disable_work); | |
3198 | ||
b1b813d4 DH |
3199 | skb_queue_head_init(&hdev->rx_q); |
3200 | skb_queue_head_init(&hdev->cmd_q); | |
3201 | skb_queue_head_init(&hdev->raw_q); | |
3202 | ||
3203 | init_waitqueue_head(&hdev->req_wait_q); | |
3204 | ||
bda4f23a | 3205 | setup_timer(&hdev->cmd_timer, hci_cmd_timeout, (unsigned long) hdev); |
b1b813d4 | 3206 | |
b1b813d4 DH |
3207 | hci_init_sysfs(hdev); |
3208 | discovery_init(hdev); | |
9be0dab7 DH |
3209 | |
3210 | return hdev; | |
3211 | } | |
3212 | EXPORT_SYMBOL(hci_alloc_dev); | |
3213 | ||
3214 | /* Free HCI device */ | |
3215 | void hci_free_dev(struct hci_dev *hdev) | |
3216 | { | |
9be0dab7 DH |
3217 | /* will free via device release */ |
3218 | put_device(&hdev->dev); | |
3219 | } | |
3220 | EXPORT_SYMBOL(hci_free_dev); | |
3221 | ||
1da177e4 LT |
3222 | /* Register HCI device */ |
3223 | int hci_register_dev(struct hci_dev *hdev) | |
3224 | { | |
b1b813d4 | 3225 | int id, error; |
1da177e4 | 3226 | |
010666a1 | 3227 | if (!hdev->open || !hdev->close) |
1da177e4 LT |
3228 | return -EINVAL; |
3229 | ||
08add513 MM |
3230 | /* Do not allow HCI_AMP devices to register at index 0, |
3231 | * so the index can be used as the AMP controller ID. | |
3232 | */ | |
3df92b31 SL |
3233 | switch (hdev->dev_type) { |
3234 | case HCI_BREDR: | |
3235 | id = ida_simple_get(&hci_index_ida, 0, 0, GFP_KERNEL); | |
3236 | break; | |
3237 | case HCI_AMP: | |
3238 | id = ida_simple_get(&hci_index_ida, 1, 0, GFP_KERNEL); | |
3239 | break; | |
3240 | default: | |
3241 | return -EINVAL; | |
1da177e4 | 3242 | } |
8e87d142 | 3243 | |
3df92b31 SL |
3244 | if (id < 0) |
3245 | return id; | |
3246 | ||
1da177e4 LT |
3247 | sprintf(hdev->name, "hci%d", id); |
3248 | hdev->id = id; | |
2d8b3a11 AE |
3249 | |
3250 | BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); | |
3251 | ||
d8537548 KC |
3252 | hdev->workqueue = alloc_workqueue("%s", WQ_HIGHPRI | WQ_UNBOUND | |
3253 | WQ_MEM_RECLAIM, 1, hdev->name); | |
33ca954d DH |
3254 | if (!hdev->workqueue) { |
3255 | error = -ENOMEM; | |
3256 | goto err; | |
3257 | } | |
f48fd9c8 | 3258 | |
d8537548 KC |
3259 | hdev->req_workqueue = alloc_workqueue("%s", WQ_HIGHPRI | WQ_UNBOUND | |
3260 | WQ_MEM_RECLAIM, 1, hdev->name); | |
6ead1bbc JH |
3261 | if (!hdev->req_workqueue) { |
3262 | destroy_workqueue(hdev->workqueue); | |
3263 | error = -ENOMEM; | |
3264 | goto err; | |
3265 | } | |
3266 | ||
0153e2ec MH |
3267 | if (!IS_ERR_OR_NULL(bt_debugfs)) |
3268 | hdev->debugfs = debugfs_create_dir(hdev->name, bt_debugfs); | |
3269 | ||
bdc3e0f1 MH |
3270 | dev_set_name(&hdev->dev, "%s", hdev->name); |
3271 | ||
99780a7b JH |
3272 | hdev->tfm_aes = crypto_alloc_blkcipher("ecb(aes)", 0, |
3273 | CRYPTO_ALG_ASYNC); | |
3274 | if (IS_ERR(hdev->tfm_aes)) { | |
3275 | BT_ERR("Unable to create crypto context"); | |
3276 | error = PTR_ERR(hdev->tfm_aes); | |
3277 | hdev->tfm_aes = NULL; | |
3278 | goto err_wqueue; | |
3279 | } | |
3280 | ||
bdc3e0f1 | 3281 | error = device_add(&hdev->dev); |
33ca954d | 3282 | if (error < 0) |
99780a7b | 3283 | goto err_tfm; |
1da177e4 | 3284 | |
611b30f7 | 3285 | hdev->rfkill = rfkill_alloc(hdev->name, &hdev->dev, |
a8c5fb1a GP |
3286 | RFKILL_TYPE_BLUETOOTH, &hci_rfkill_ops, |
3287 | hdev); | |
611b30f7 MH |
3288 | if (hdev->rfkill) { |
3289 | if (rfkill_register(hdev->rfkill) < 0) { | |
3290 | rfkill_destroy(hdev->rfkill); | |
3291 | hdev->rfkill = NULL; | |
3292 | } | |
3293 | } | |
3294 | ||
5e130367 JH |
3295 | if (hdev->rfkill && rfkill_blocked(hdev->rfkill)) |
3296 | set_bit(HCI_RFKILLED, &hdev->dev_flags); | |
3297 | ||
a8b2d5c2 | 3298 | set_bit(HCI_SETUP, &hdev->dev_flags); |
004b0258 | 3299 | set_bit(HCI_AUTO_OFF, &hdev->dev_flags); |
ce2be9ac | 3300 | |
01cd3404 | 3301 | if (hdev->dev_type == HCI_BREDR) { |
56f87901 JH |
3302 | /* Assume BR/EDR support until proven otherwise (such as |
3303 | * through reading supported features during init. | |
3304 | */ | |
3305 | set_bit(HCI_BREDR_ENABLED, &hdev->dev_flags); | |
3306 | } | |
ce2be9ac | 3307 | |
fcee3377 GP |
3308 | write_lock(&hci_dev_list_lock); |
3309 | list_add(&hdev->list, &hci_dev_list); | |
3310 | write_unlock(&hci_dev_list_lock); | |
3311 | ||
1da177e4 | 3312 | hci_notify(hdev, HCI_DEV_REG); |
dc946bd8 | 3313 | hci_dev_hold(hdev); |
1da177e4 | 3314 | |
19202573 | 3315 | queue_work(hdev->req_workqueue, &hdev->power_on); |
fbe96d6f | 3316 | |
1da177e4 | 3317 | return id; |
f48fd9c8 | 3318 | |
99780a7b JH |
3319 | err_tfm: |
3320 | crypto_free_blkcipher(hdev->tfm_aes); | |
33ca954d DH |
3321 | err_wqueue: |
3322 | destroy_workqueue(hdev->workqueue); | |
6ead1bbc | 3323 | destroy_workqueue(hdev->req_workqueue); |
33ca954d | 3324 | err: |
3df92b31 | 3325 | ida_simple_remove(&hci_index_ida, hdev->id); |
f48fd9c8 | 3326 | |
33ca954d | 3327 | return error; |
1da177e4 LT |
3328 | } |
3329 | EXPORT_SYMBOL(hci_register_dev); | |
3330 | ||
3331 | /* Unregister HCI device */ | |
59735631 | 3332 | void hci_unregister_dev(struct hci_dev *hdev) |
1da177e4 | 3333 | { |
3df92b31 | 3334 | int i, id; |
ef222013 | 3335 | |
c13854ce | 3336 | BT_DBG("%p name %s bus %d", hdev, hdev->name, hdev->bus); |
1da177e4 | 3337 | |
94324962 JH |
3338 | set_bit(HCI_UNREGISTER, &hdev->dev_flags); |
3339 | ||
3df92b31 SL |
3340 | id = hdev->id; |
3341 | ||
f20d09d5 | 3342 | write_lock(&hci_dev_list_lock); |
1da177e4 | 3343 | list_del(&hdev->list); |
f20d09d5 | 3344 | write_unlock(&hci_dev_list_lock); |
1da177e4 LT |
3345 | |
3346 | hci_dev_do_close(hdev); | |
3347 | ||
cd4c5391 | 3348 | for (i = 0; i < NUM_REASSEMBLY; i++) |
ef222013 MH |
3349 | kfree_skb(hdev->reassembly[i]); |
3350 | ||
b9b5ef18 GP |
3351 | cancel_work_sync(&hdev->power_on); |
3352 | ||
ab81cbf9 | 3353 | if (!test_bit(HCI_INIT, &hdev->flags) && |
a8c5fb1a | 3354 | !test_bit(HCI_SETUP, &hdev->dev_flags)) { |
09fd0de5 | 3355 | hci_dev_lock(hdev); |
744cf19e | 3356 | mgmt_index_removed(hdev); |
09fd0de5 | 3357 | hci_dev_unlock(hdev); |
56e5cb86 | 3358 | } |
ab81cbf9 | 3359 | |
2e58ef3e JH |
3360 | /* mgmt_index_removed should take care of emptying the |
3361 | * pending list */ | |
3362 | BUG_ON(!list_empty(&hdev->mgmt_pending)); | |
3363 | ||
1da177e4 LT |
3364 | hci_notify(hdev, HCI_DEV_UNREG); |
3365 | ||
611b30f7 MH |
3366 | if (hdev->rfkill) { |
3367 | rfkill_unregister(hdev->rfkill); | |
3368 | rfkill_destroy(hdev->rfkill); | |
3369 | } | |
3370 | ||
99780a7b JH |
3371 | if (hdev->tfm_aes) |
3372 | crypto_free_blkcipher(hdev->tfm_aes); | |
3373 | ||
bdc3e0f1 | 3374 | device_del(&hdev->dev); |
147e2d59 | 3375 | |
0153e2ec MH |
3376 | debugfs_remove_recursive(hdev->debugfs); |
3377 | ||
f48fd9c8 | 3378 | destroy_workqueue(hdev->workqueue); |
6ead1bbc | 3379 | destroy_workqueue(hdev->req_workqueue); |
f48fd9c8 | 3380 | |
09fd0de5 | 3381 | hci_dev_lock(hdev); |
e2e0cacb | 3382 | hci_blacklist_clear(hdev); |
2aeb9a1a | 3383 | hci_uuids_clear(hdev); |
55ed8ca1 | 3384 | hci_link_keys_clear(hdev); |
b899efaf | 3385 | hci_smp_ltks_clear(hdev); |
970c4e46 | 3386 | hci_smp_irks_clear(hdev); |
2763eda6 | 3387 | hci_remote_oob_data_clear(hdev); |
15819a70 | 3388 | hci_conn_params_clear(hdev); |
09fd0de5 | 3389 | hci_dev_unlock(hdev); |
e2e0cacb | 3390 | |
dc946bd8 | 3391 | hci_dev_put(hdev); |
3df92b31 SL |
3392 | |
3393 | ida_simple_remove(&hci_index_ida, id); | |
1da177e4 LT |
3394 | } |
3395 | EXPORT_SYMBOL(hci_unregister_dev); | |
3396 | ||
3397 | /* Suspend HCI device */ | |
3398 | int hci_suspend_dev(struct hci_dev *hdev) | |
3399 | { | |
3400 | hci_notify(hdev, HCI_DEV_SUSPEND); | |
3401 | return 0; | |
3402 | } | |
3403 | EXPORT_SYMBOL(hci_suspend_dev); | |
3404 | ||
3405 | /* Resume HCI device */ | |
3406 | int hci_resume_dev(struct hci_dev *hdev) | |
3407 | { | |
3408 | hci_notify(hdev, HCI_DEV_RESUME); | |
3409 | return 0; | |
3410 | } | |
3411 | EXPORT_SYMBOL(hci_resume_dev); | |
3412 | ||
76bca880 | 3413 | /* Receive frame from HCI drivers */ |
e1a26170 | 3414 | int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb) |
76bca880 | 3415 | { |
76bca880 | 3416 | if (!hdev || (!test_bit(HCI_UP, &hdev->flags) |
a8c5fb1a | 3417 | && !test_bit(HCI_INIT, &hdev->flags))) { |
76bca880 MH |
3418 | kfree_skb(skb); |
3419 | return -ENXIO; | |
3420 | } | |
3421 | ||
d82603c6 | 3422 | /* Incoming skb */ |
76bca880 MH |
3423 | bt_cb(skb)->incoming = 1; |
3424 | ||
3425 | /* Time stamp */ | |
3426 | __net_timestamp(skb); | |
3427 | ||
76bca880 | 3428 | skb_queue_tail(&hdev->rx_q, skb); |
b78752cc | 3429 | queue_work(hdev->workqueue, &hdev->rx_work); |
c78ae283 | 3430 | |
76bca880 MH |
3431 | return 0; |
3432 | } | |
3433 | EXPORT_SYMBOL(hci_recv_frame); | |
3434 | ||
33e882a5 | 3435 | static int hci_reassembly(struct hci_dev *hdev, int type, void *data, |
a8c5fb1a | 3436 | int count, __u8 index) |
33e882a5 SS |
3437 | { |
3438 | int len = 0; | |
3439 | int hlen = 0; | |
3440 | int remain = count; | |
3441 | struct sk_buff *skb; | |
3442 | struct bt_skb_cb *scb; | |
3443 | ||
3444 | if ((type < HCI_ACLDATA_PKT || type > HCI_EVENT_PKT) || | |
a8c5fb1a | 3445 | index >= NUM_REASSEMBLY) |
33e882a5 SS |
3446 | return -EILSEQ; |
3447 | ||
3448 | skb = hdev->reassembly[index]; | |
3449 | ||
3450 | if (!skb) { | |
3451 | switch (type) { | |
3452 | case HCI_ACLDATA_PKT: | |
3453 | len = HCI_MAX_FRAME_SIZE; | |
3454 | hlen = HCI_ACL_HDR_SIZE; | |
3455 | break; | |
3456 | case HCI_EVENT_PKT: | |
3457 | len = HCI_MAX_EVENT_SIZE; | |
3458 | hlen = HCI_EVENT_HDR_SIZE; | |
3459 | break; | |
3460 | case HCI_SCODATA_PKT: | |
3461 | len = HCI_MAX_SCO_SIZE; | |
3462 | hlen = HCI_SCO_HDR_SIZE; | |
3463 | break; | |
3464 | } | |
3465 | ||
1e429f38 | 3466 | skb = bt_skb_alloc(len, GFP_ATOMIC); |
33e882a5 SS |
3467 | if (!skb) |
3468 | return -ENOMEM; | |
3469 | ||
3470 | scb = (void *) skb->cb; | |
3471 | scb->expect = hlen; | |
3472 | scb->pkt_type = type; | |
3473 | ||
33e882a5 SS |
3474 | hdev->reassembly[index] = skb; |
3475 | } | |
3476 | ||
3477 | while (count) { | |
3478 | scb = (void *) skb->cb; | |
89bb46d0 | 3479 | len = min_t(uint, scb->expect, count); |
33e882a5 SS |
3480 | |
3481 | memcpy(skb_put(skb, len), data, len); | |
3482 | ||
3483 | count -= len; | |
3484 | data += len; | |
3485 | scb->expect -= len; | |
3486 | remain = count; | |
3487 | ||
3488 | switch (type) { | |
3489 | case HCI_EVENT_PKT: | |
3490 | if (skb->len == HCI_EVENT_HDR_SIZE) { | |
3491 | struct hci_event_hdr *h = hci_event_hdr(skb); | |
3492 | scb->expect = h->plen; | |
3493 | ||
3494 | if (skb_tailroom(skb) < scb->expect) { | |
3495 | kfree_skb(skb); | |
3496 | hdev->reassembly[index] = NULL; | |
3497 | return -ENOMEM; | |
3498 | } | |
3499 | } | |
3500 | break; | |
3501 | ||
3502 | case HCI_ACLDATA_PKT: | |
3503 | if (skb->len == HCI_ACL_HDR_SIZE) { | |
3504 | struct hci_acl_hdr *h = hci_acl_hdr(skb); | |
3505 | scb->expect = __le16_to_cpu(h->dlen); | |
3506 | ||
3507 | if (skb_tailroom(skb) < scb->expect) { | |
3508 | kfree_skb(skb); | |
3509 | hdev->reassembly[index] = NULL; | |
3510 | return -ENOMEM; | |
3511 | } | |
3512 | } | |
3513 | break; | |
3514 | ||
3515 | case HCI_SCODATA_PKT: | |
3516 | if (skb->len == HCI_SCO_HDR_SIZE) { | |
3517 | struct hci_sco_hdr *h = hci_sco_hdr(skb); | |
3518 | scb->expect = h->dlen; | |
3519 | ||
3520 | if (skb_tailroom(skb) < scb->expect) { | |
3521 | kfree_skb(skb); | |
3522 | hdev->reassembly[index] = NULL; | |
3523 | return -ENOMEM; | |
3524 | } | |
3525 | } | |
3526 | break; | |
3527 | } | |
3528 | ||
3529 | if (scb->expect == 0) { | |
3530 | /* Complete frame */ | |
3531 | ||
3532 | bt_cb(skb)->pkt_type = type; | |
e1a26170 | 3533 | hci_recv_frame(hdev, skb); |
33e882a5 SS |
3534 | |
3535 | hdev->reassembly[index] = NULL; | |
3536 | return remain; | |
3537 | } | |
3538 | } | |
3539 | ||
3540 | return remain; | |
3541 | } | |
3542 | ||
ef222013 MH |
3543 | int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count) |
3544 | { | |
f39a3c06 SS |
3545 | int rem = 0; |
3546 | ||
ef222013 MH |
3547 | if (type < HCI_ACLDATA_PKT || type > HCI_EVENT_PKT) |
3548 | return -EILSEQ; | |
3549 | ||
da5f6c37 | 3550 | while (count) { |
1e429f38 | 3551 | rem = hci_reassembly(hdev, type, data, count, type - 1); |
f39a3c06 SS |
3552 | if (rem < 0) |
3553 | return rem; | |
ef222013 | 3554 | |
f39a3c06 SS |
3555 | data += (count - rem); |
3556 | count = rem; | |
f81c6224 | 3557 | } |
ef222013 | 3558 | |
f39a3c06 | 3559 | return rem; |
ef222013 MH |
3560 | } |
3561 | EXPORT_SYMBOL(hci_recv_fragment); | |
3562 | ||
99811510 SS |
3563 | #define STREAM_REASSEMBLY 0 |
3564 | ||
3565 | int hci_recv_stream_fragment(struct hci_dev *hdev, void *data, int count) | |
3566 | { | |
3567 | int type; | |
3568 | int rem = 0; | |
3569 | ||
da5f6c37 | 3570 | while (count) { |
99811510 SS |
3571 | struct sk_buff *skb = hdev->reassembly[STREAM_REASSEMBLY]; |
3572 | ||
3573 | if (!skb) { | |
3574 | struct { char type; } *pkt; | |
3575 | ||
3576 | /* Start of the frame */ | |
3577 | pkt = data; | |
3578 | type = pkt->type; | |
3579 | ||
3580 | data++; | |
3581 | count--; | |
3582 | } else | |
3583 | type = bt_cb(skb)->pkt_type; | |
3584 | ||
1e429f38 | 3585 | rem = hci_reassembly(hdev, type, data, count, |
a8c5fb1a | 3586 | STREAM_REASSEMBLY); |
99811510 SS |
3587 | if (rem < 0) |
3588 | return rem; | |
3589 | ||
3590 | data += (count - rem); | |
3591 | count = rem; | |
f81c6224 | 3592 | } |
99811510 SS |
3593 | |
3594 | return rem; | |
3595 | } | |
3596 | EXPORT_SYMBOL(hci_recv_stream_fragment); | |
3597 | ||
1da177e4 LT |
3598 | /* ---- Interface to upper protocols ---- */ |
3599 | ||
1da177e4 LT |
3600 | int hci_register_cb(struct hci_cb *cb) |
3601 | { | |
3602 | BT_DBG("%p name %s", cb, cb->name); | |
3603 | ||
f20d09d5 | 3604 | write_lock(&hci_cb_list_lock); |
1da177e4 | 3605 | list_add(&cb->list, &hci_cb_list); |
f20d09d5 | 3606 | write_unlock(&hci_cb_list_lock); |
1da177e4 LT |
3607 | |
3608 | return 0; | |
3609 | } | |
3610 | EXPORT_SYMBOL(hci_register_cb); | |
3611 | ||
3612 | int hci_unregister_cb(struct hci_cb *cb) | |
3613 | { | |
3614 | BT_DBG("%p name %s", cb, cb->name); | |
3615 | ||
f20d09d5 | 3616 | write_lock(&hci_cb_list_lock); |
1da177e4 | 3617 | list_del(&cb->list); |
f20d09d5 | 3618 | write_unlock(&hci_cb_list_lock); |
1da177e4 LT |
3619 | |
3620 | return 0; | |
3621 | } | |
3622 | EXPORT_SYMBOL(hci_unregister_cb); | |
3623 | ||
51086991 | 3624 | static void hci_send_frame(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 | 3625 | { |
0d48d939 | 3626 | BT_DBG("%s type %d len %d", hdev->name, bt_cb(skb)->pkt_type, skb->len); |
1da177e4 | 3627 | |
cd82e61c MH |
3628 | /* Time stamp */ |
3629 | __net_timestamp(skb); | |
1da177e4 | 3630 | |
cd82e61c MH |
3631 | /* Send copy to monitor */ |
3632 | hci_send_to_monitor(hdev, skb); | |
3633 | ||
3634 | if (atomic_read(&hdev->promisc)) { | |
3635 | /* Send copy to the sockets */ | |
470fe1b5 | 3636 | hci_send_to_sock(hdev, skb); |
1da177e4 LT |
3637 | } |
3638 | ||
3639 | /* Get rid of skb owner, prior to sending to the driver. */ | |
3640 | skb_orphan(skb); | |
3641 | ||
7bd8f09f | 3642 | if (hdev->send(hdev, skb) < 0) |
51086991 | 3643 | BT_ERR("%s sending frame failed", hdev->name); |
1da177e4 LT |
3644 | } |
3645 | ||
3119ae95 JH |
3646 | void hci_req_init(struct hci_request *req, struct hci_dev *hdev) |
3647 | { | |
3648 | skb_queue_head_init(&req->cmd_q); | |
3649 | req->hdev = hdev; | |
5d73e034 | 3650 | req->err = 0; |
3119ae95 JH |
3651 | } |
3652 | ||
3653 | int hci_req_run(struct hci_request *req, hci_req_complete_t complete) | |
3654 | { | |
3655 | struct hci_dev *hdev = req->hdev; | |
3656 | struct sk_buff *skb; | |
3657 | unsigned long flags; | |
3658 | ||
3659 | BT_DBG("length %u", skb_queue_len(&req->cmd_q)); | |
3660 | ||
5d73e034 AG |
3661 | /* If an error occured during request building, remove all HCI |
3662 | * commands queued on the HCI request queue. | |
3663 | */ | |
3664 | if (req->err) { | |
3665 | skb_queue_purge(&req->cmd_q); | |
3666 | return req->err; | |
3667 | } | |
3668 | ||
3119ae95 JH |
3669 | /* Do not allow empty requests */ |
3670 | if (skb_queue_empty(&req->cmd_q)) | |
382b0c39 | 3671 | return -ENODATA; |
3119ae95 JH |
3672 | |
3673 | skb = skb_peek_tail(&req->cmd_q); | |
3674 | bt_cb(skb)->req.complete = complete; | |
3675 | ||
3676 | spin_lock_irqsave(&hdev->cmd_q.lock, flags); | |
3677 | skb_queue_splice_tail(&req->cmd_q, &hdev->cmd_q); | |
3678 | spin_unlock_irqrestore(&hdev->cmd_q.lock, flags); | |
3679 | ||
3680 | queue_work(hdev->workqueue, &hdev->cmd_work); | |
3681 | ||
3682 | return 0; | |
3683 | } | |
3684 | ||
1ca3a9d0 | 3685 | static struct sk_buff *hci_prepare_cmd(struct hci_dev *hdev, u16 opcode, |
07dc93dd | 3686 | u32 plen, const void *param) |
1da177e4 LT |
3687 | { |
3688 | int len = HCI_COMMAND_HDR_SIZE + plen; | |
3689 | struct hci_command_hdr *hdr; | |
3690 | struct sk_buff *skb; | |
3691 | ||
1da177e4 | 3692 | skb = bt_skb_alloc(len, GFP_ATOMIC); |
1ca3a9d0 JH |
3693 | if (!skb) |
3694 | return NULL; | |
1da177e4 LT |
3695 | |
3696 | hdr = (struct hci_command_hdr *) skb_put(skb, HCI_COMMAND_HDR_SIZE); | |
a9de9248 | 3697 | hdr->opcode = cpu_to_le16(opcode); |
1da177e4 LT |
3698 | hdr->plen = plen; |
3699 | ||
3700 | if (plen) | |
3701 | memcpy(skb_put(skb, plen), param, plen); | |
3702 | ||
3703 | BT_DBG("skb len %d", skb->len); | |
3704 | ||
0d48d939 | 3705 | bt_cb(skb)->pkt_type = HCI_COMMAND_PKT; |
c78ae283 | 3706 | |
1ca3a9d0 JH |
3707 | return skb; |
3708 | } | |
3709 | ||
3710 | /* Send HCI command */ | |
07dc93dd JH |
3711 | int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, |
3712 | const void *param) | |
1ca3a9d0 JH |
3713 | { |
3714 | struct sk_buff *skb; | |
3715 | ||
3716 | BT_DBG("%s opcode 0x%4.4x plen %d", hdev->name, opcode, plen); | |
3717 | ||
3718 | skb = hci_prepare_cmd(hdev, opcode, plen, param); | |
3719 | if (!skb) { | |
3720 | BT_ERR("%s no memory for command", hdev->name); | |
3721 | return -ENOMEM; | |
3722 | } | |
3723 | ||
11714b3d JH |
3724 | /* Stand-alone HCI commands must be flaged as |
3725 | * single-command requests. | |
3726 | */ | |
3727 | bt_cb(skb)->req.start = true; | |
3728 | ||
1da177e4 | 3729 | skb_queue_tail(&hdev->cmd_q, skb); |
c347b765 | 3730 | queue_work(hdev->workqueue, &hdev->cmd_work); |
1da177e4 LT |
3731 | |
3732 | return 0; | |
3733 | } | |
1da177e4 | 3734 | |
71c76a17 | 3735 | /* Queue a command to an asynchronous HCI request */ |
07dc93dd JH |
3736 | void hci_req_add_ev(struct hci_request *req, u16 opcode, u32 plen, |
3737 | const void *param, u8 event) | |
71c76a17 JH |
3738 | { |
3739 | struct hci_dev *hdev = req->hdev; | |
3740 | struct sk_buff *skb; | |
3741 | ||
3742 | BT_DBG("%s opcode 0x%4.4x plen %d", hdev->name, opcode, plen); | |
3743 | ||
34739c1e AG |
3744 | /* If an error occured during request building, there is no point in |
3745 | * queueing the HCI command. We can simply return. | |
3746 | */ | |
3747 | if (req->err) | |
3748 | return; | |
3749 | ||
71c76a17 JH |
3750 | skb = hci_prepare_cmd(hdev, opcode, plen, param); |
3751 | if (!skb) { | |
5d73e034 AG |
3752 | BT_ERR("%s no memory for command (opcode 0x%4.4x)", |
3753 | hdev->name, opcode); | |
3754 | req->err = -ENOMEM; | |
e348fe6b | 3755 | return; |
71c76a17 JH |
3756 | } |
3757 | ||
3758 | if (skb_queue_empty(&req->cmd_q)) | |
3759 | bt_cb(skb)->req.start = true; | |
3760 | ||
02350a72 JH |
3761 | bt_cb(skb)->req.event = event; |
3762 | ||
71c76a17 | 3763 | skb_queue_tail(&req->cmd_q, skb); |
71c76a17 JH |
3764 | } |
3765 | ||
07dc93dd JH |
3766 | void hci_req_add(struct hci_request *req, u16 opcode, u32 plen, |
3767 | const void *param) | |
02350a72 JH |
3768 | { |
3769 | hci_req_add_ev(req, opcode, plen, param, 0); | |
3770 | } | |
3771 | ||
1da177e4 | 3772 | /* Get data from the previously sent command */ |
a9de9248 | 3773 | void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode) |
1da177e4 LT |
3774 | { |
3775 | struct hci_command_hdr *hdr; | |
3776 | ||
3777 | if (!hdev->sent_cmd) | |
3778 | return NULL; | |
3779 | ||
3780 | hdr = (void *) hdev->sent_cmd->data; | |
3781 | ||
a9de9248 | 3782 | if (hdr->opcode != cpu_to_le16(opcode)) |
1da177e4 LT |
3783 | return NULL; |
3784 | ||
f0e09510 | 3785 | BT_DBG("%s opcode 0x%4.4x", hdev->name, opcode); |
1da177e4 LT |
3786 | |
3787 | return hdev->sent_cmd->data + HCI_COMMAND_HDR_SIZE; | |
3788 | } | |
3789 | ||
3790 | /* Send ACL data */ | |
3791 | static void hci_add_acl_hdr(struct sk_buff *skb, __u16 handle, __u16 flags) | |
3792 | { | |
3793 | struct hci_acl_hdr *hdr; | |
3794 | int len = skb->len; | |
3795 | ||
badff6d0 ACM |
3796 | skb_push(skb, HCI_ACL_HDR_SIZE); |
3797 | skb_reset_transport_header(skb); | |
9c70220b | 3798 | hdr = (struct hci_acl_hdr *)skb_transport_header(skb); |
aca3192c YH |
3799 | hdr->handle = cpu_to_le16(hci_handle_pack(handle, flags)); |
3800 | hdr->dlen = cpu_to_le16(len); | |
1da177e4 LT |
3801 | } |
3802 | ||
ee22be7e | 3803 | static void hci_queue_acl(struct hci_chan *chan, struct sk_buff_head *queue, |
a8c5fb1a | 3804 | struct sk_buff *skb, __u16 flags) |
1da177e4 | 3805 | { |
ee22be7e | 3806 | struct hci_conn *conn = chan->conn; |
1da177e4 LT |
3807 | struct hci_dev *hdev = conn->hdev; |
3808 | struct sk_buff *list; | |
3809 | ||
087bfd99 GP |
3810 | skb->len = skb_headlen(skb); |
3811 | skb->data_len = 0; | |
3812 | ||
3813 | bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT; | |
204a6e54 AE |
3814 | |
3815 | switch (hdev->dev_type) { | |
3816 | case HCI_BREDR: | |
3817 | hci_add_acl_hdr(skb, conn->handle, flags); | |
3818 | break; | |
3819 | case HCI_AMP: | |
3820 | hci_add_acl_hdr(skb, chan->handle, flags); | |
3821 | break; | |
3822 | default: | |
3823 | BT_ERR("%s unknown dev_type %d", hdev->name, hdev->dev_type); | |
3824 | return; | |
3825 | } | |
087bfd99 | 3826 | |
70f23020 AE |
3827 | list = skb_shinfo(skb)->frag_list; |
3828 | if (!list) { | |
1da177e4 LT |
3829 | /* Non fragmented */ |
3830 | BT_DBG("%s nonfrag skb %p len %d", hdev->name, skb, skb->len); | |
3831 | ||
73d80deb | 3832 | skb_queue_tail(queue, skb); |
1da177e4 LT |
3833 | } else { |
3834 | /* Fragmented */ | |
3835 | BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); | |
3836 | ||
3837 | skb_shinfo(skb)->frag_list = NULL; | |
3838 | ||
3839 | /* Queue all fragments atomically */ | |
af3e6359 | 3840 | spin_lock(&queue->lock); |
1da177e4 | 3841 | |
73d80deb | 3842 | __skb_queue_tail(queue, skb); |
e702112f AE |
3843 | |
3844 | flags &= ~ACL_START; | |
3845 | flags |= ACL_CONT; | |
1da177e4 LT |
3846 | do { |
3847 | skb = list; list = list->next; | |
8e87d142 | 3848 | |
0d48d939 | 3849 | bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT; |
e702112f | 3850 | hci_add_acl_hdr(skb, conn->handle, flags); |
1da177e4 LT |
3851 | |
3852 | BT_DBG("%s frag %p len %d", hdev->name, skb, skb->len); | |
3853 | ||
73d80deb | 3854 | __skb_queue_tail(queue, skb); |
1da177e4 LT |
3855 | } while (list); |
3856 | ||
af3e6359 | 3857 | spin_unlock(&queue->lock); |
1da177e4 | 3858 | } |
73d80deb LAD |
3859 | } |
3860 | ||
3861 | void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags) | |
3862 | { | |
ee22be7e | 3863 | struct hci_dev *hdev = chan->conn->hdev; |
73d80deb | 3864 | |
f0e09510 | 3865 | BT_DBG("%s chan %p flags 0x%4.4x", hdev->name, chan, flags); |
73d80deb | 3866 | |
ee22be7e | 3867 | hci_queue_acl(chan, &chan->data_q, skb, flags); |
1da177e4 | 3868 | |
3eff45ea | 3869 | queue_work(hdev->workqueue, &hdev->tx_work); |
1da177e4 | 3870 | } |
1da177e4 LT |
3871 | |
3872 | /* Send SCO data */ | |
0d861d8b | 3873 | void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb) |
1da177e4 LT |
3874 | { |
3875 | struct hci_dev *hdev = conn->hdev; | |
3876 | struct hci_sco_hdr hdr; | |
3877 | ||
3878 | BT_DBG("%s len %d", hdev->name, skb->len); | |
3879 | ||
aca3192c | 3880 | hdr.handle = cpu_to_le16(conn->handle); |
1da177e4 LT |
3881 | hdr.dlen = skb->len; |
3882 | ||
badff6d0 ACM |
3883 | skb_push(skb, HCI_SCO_HDR_SIZE); |
3884 | skb_reset_transport_header(skb); | |
9c70220b | 3885 | memcpy(skb_transport_header(skb), &hdr, HCI_SCO_HDR_SIZE); |
1da177e4 | 3886 | |
0d48d939 | 3887 | bt_cb(skb)->pkt_type = HCI_SCODATA_PKT; |
c78ae283 | 3888 | |
1da177e4 | 3889 | skb_queue_tail(&conn->data_q, skb); |
3eff45ea | 3890 | queue_work(hdev->workqueue, &hdev->tx_work); |
1da177e4 | 3891 | } |
1da177e4 LT |
3892 | |
3893 | /* ---- HCI TX task (outgoing data) ---- */ | |
3894 | ||
3895 | /* HCI Connection scheduler */ | |
6039aa73 GP |
3896 | static struct hci_conn *hci_low_sent(struct hci_dev *hdev, __u8 type, |
3897 | int *quote) | |
1da177e4 LT |
3898 | { |
3899 | struct hci_conn_hash *h = &hdev->conn_hash; | |
8035ded4 | 3900 | struct hci_conn *conn = NULL, *c; |
abc5de8f | 3901 | unsigned int num = 0, min = ~0; |
1da177e4 | 3902 | |
8e87d142 | 3903 | /* We don't have to lock device here. Connections are always |
1da177e4 | 3904 | * added and removed with TX task disabled. */ |
bf4c6325 GP |
3905 | |
3906 | rcu_read_lock(); | |
3907 | ||
3908 | list_for_each_entry_rcu(c, &h->list, list) { | |
769be974 | 3909 | if (c->type != type || skb_queue_empty(&c->data_q)) |
1da177e4 | 3910 | continue; |
769be974 MH |
3911 | |
3912 | if (c->state != BT_CONNECTED && c->state != BT_CONFIG) | |
3913 | continue; | |
3914 | ||
1da177e4 LT |
3915 | num++; |
3916 | ||
3917 | if (c->sent < min) { | |
3918 | min = c->sent; | |
3919 | conn = c; | |
3920 | } | |
52087a79 LAD |
3921 | |
3922 | if (hci_conn_num(hdev, type) == num) | |
3923 | break; | |
1da177e4 LT |
3924 | } |
3925 | ||
bf4c6325 GP |
3926 | rcu_read_unlock(); |
3927 | ||
1da177e4 | 3928 | if (conn) { |
6ed58ec5 VT |
3929 | int cnt, q; |
3930 | ||
3931 | switch (conn->type) { | |
3932 | case ACL_LINK: | |
3933 | cnt = hdev->acl_cnt; | |
3934 | break; | |
3935 | case SCO_LINK: | |
3936 | case ESCO_LINK: | |
3937 | cnt = hdev->sco_cnt; | |
3938 | break; | |
3939 | case LE_LINK: | |
3940 | cnt = hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt; | |
3941 | break; | |
3942 | default: | |
3943 | cnt = 0; | |
3944 | BT_ERR("Unknown link type"); | |
3945 | } | |
3946 | ||
3947 | q = cnt / num; | |
1da177e4 LT |
3948 | *quote = q ? q : 1; |
3949 | } else | |
3950 | *quote = 0; | |
3951 | ||
3952 | BT_DBG("conn %p quote %d", conn, *quote); | |
3953 | return conn; | |
3954 | } | |
3955 | ||
6039aa73 | 3956 | static void hci_link_tx_to(struct hci_dev *hdev, __u8 type) |
1da177e4 LT |
3957 | { |
3958 | struct hci_conn_hash *h = &hdev->conn_hash; | |
8035ded4 | 3959 | struct hci_conn *c; |
1da177e4 | 3960 | |
bae1f5d9 | 3961 | BT_ERR("%s link tx timeout", hdev->name); |
1da177e4 | 3962 | |
bf4c6325 GP |
3963 | rcu_read_lock(); |
3964 | ||
1da177e4 | 3965 | /* Kill stalled connections */ |
bf4c6325 | 3966 | list_for_each_entry_rcu(c, &h->list, list) { |
bae1f5d9 | 3967 | if (c->type == type && c->sent) { |
6ed93dc6 AE |
3968 | BT_ERR("%s killing stalled connection %pMR", |
3969 | hdev->name, &c->dst); | |
bed71748 | 3970 | hci_disconnect(c, HCI_ERROR_REMOTE_USER_TERM); |
1da177e4 LT |
3971 | } |
3972 | } | |
bf4c6325 GP |
3973 | |
3974 | rcu_read_unlock(); | |
1da177e4 LT |
3975 | } |
3976 | ||
6039aa73 GP |
3977 | static struct hci_chan *hci_chan_sent(struct hci_dev *hdev, __u8 type, |
3978 | int *quote) | |
1da177e4 | 3979 | { |
73d80deb LAD |
3980 | struct hci_conn_hash *h = &hdev->conn_hash; |
3981 | struct hci_chan *chan = NULL; | |
abc5de8f | 3982 | unsigned int num = 0, min = ~0, cur_prio = 0; |
1da177e4 | 3983 | struct hci_conn *conn; |
73d80deb LAD |
3984 | int cnt, q, conn_num = 0; |
3985 | ||
3986 | BT_DBG("%s", hdev->name); | |
3987 | ||
bf4c6325 GP |
3988 | rcu_read_lock(); |
3989 | ||
3990 | list_for_each_entry_rcu(conn, &h->list, list) { | |
73d80deb LAD |
3991 | struct hci_chan *tmp; |
3992 | ||
3993 | if (conn->type != type) | |
3994 | continue; | |
3995 | ||
3996 | if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG) | |
3997 | continue; | |
3998 | ||
3999 | conn_num++; | |
4000 | ||
8192edef | 4001 | list_for_each_entry_rcu(tmp, &conn->chan_list, list) { |
73d80deb LAD |
4002 | struct sk_buff *skb; |
4003 | ||
4004 | if (skb_queue_empty(&tmp->data_q)) | |
4005 | continue; | |
4006 | ||
4007 | skb = skb_peek(&tmp->data_q); | |
4008 | if (skb->priority < cur_prio) | |
4009 | continue; | |
4010 | ||
4011 | if (skb->priority > cur_prio) { | |
4012 | num = 0; | |
4013 | min = ~0; | |
4014 | cur_prio = skb->priority; | |
4015 | } | |
4016 | ||
4017 | num++; | |
4018 | ||
4019 | if (conn->sent < min) { | |
4020 | min = conn->sent; | |
4021 | chan = tmp; | |
4022 | } | |
4023 | } | |
4024 | ||
4025 | if (hci_conn_num(hdev, type) == conn_num) | |
4026 | break; | |
4027 | } | |
4028 | ||
bf4c6325 GP |
4029 | rcu_read_unlock(); |
4030 | ||
73d80deb LAD |
4031 | if (!chan) |
4032 | return NULL; | |
4033 | ||
4034 | switch (chan->conn->type) { | |
4035 | case ACL_LINK: | |
4036 | cnt = hdev->acl_cnt; | |
4037 | break; | |
bd1eb66b AE |
4038 | case AMP_LINK: |
4039 | cnt = hdev->block_cnt; | |
4040 | break; | |
73d80deb LAD |
4041 | case SCO_LINK: |
4042 | case ESCO_LINK: | |
4043 | cnt = hdev->sco_cnt; | |
4044 | break; | |
4045 | case LE_LINK: | |
4046 | cnt = hdev->le_mtu ? hdev->le_cnt : hdev->acl_cnt; | |
4047 | break; | |
4048 | default: | |
4049 | cnt = 0; | |
4050 | BT_ERR("Unknown link type"); | |
4051 | } | |
4052 | ||
4053 | q = cnt / num; | |
4054 | *quote = q ? q : 1; | |
4055 | BT_DBG("chan %p quote %d", chan, *quote); | |
4056 | return chan; | |
4057 | } | |
4058 | ||
02b20f0b LAD |
4059 | static void hci_prio_recalculate(struct hci_dev *hdev, __u8 type) |
4060 | { | |
4061 | struct hci_conn_hash *h = &hdev->conn_hash; | |
4062 | struct hci_conn *conn; | |
4063 | int num = 0; | |
4064 | ||
4065 | BT_DBG("%s", hdev->name); | |
4066 | ||
bf4c6325 GP |
4067 | rcu_read_lock(); |
4068 | ||
4069 | list_for_each_entry_rcu(conn, &h->list, list) { | |
02b20f0b LAD |
4070 | struct hci_chan *chan; |
4071 | ||
4072 | if (conn->type != type) | |
4073 | continue; | |
4074 | ||
4075 | if (conn->state != BT_CONNECTED && conn->state != BT_CONFIG) | |
4076 | continue; | |
4077 | ||
4078 | num++; | |
4079 | ||
8192edef | 4080 | list_for_each_entry_rcu(chan, &conn->chan_list, list) { |
02b20f0b LAD |
4081 | struct sk_buff *skb; |
4082 | ||
4083 | if (chan->sent) { | |
4084 | chan->sent = 0; | |
4085 | continue; | |
4086 | } | |
4087 | ||
4088 | if (skb_queue_empty(&chan->data_q)) | |
4089 | continue; | |
4090 | ||
4091 | skb = skb_peek(&chan->data_q); | |
4092 | if (skb->priority >= HCI_PRIO_MAX - 1) | |
4093 | continue; | |
4094 | ||
4095 | skb->priority = HCI_PRIO_MAX - 1; | |
4096 | ||
4097 | BT_DBG("chan %p skb %p promoted to %d", chan, skb, | |
a8c5fb1a | 4098 | skb->priority); |
02b20f0b LAD |
4099 | } |
4100 | ||
4101 | if (hci_conn_num(hdev, type) == num) | |
4102 | break; | |
4103 | } | |
bf4c6325 GP |
4104 | |
4105 | rcu_read_unlock(); | |
4106 | ||
02b20f0b LAD |
4107 | } |
4108 | ||
b71d385a AE |
4109 | static inline int __get_blocks(struct hci_dev *hdev, struct sk_buff *skb) |
4110 | { | |
4111 | /* Calculate count of blocks used by this packet */ | |
4112 | return DIV_ROUND_UP(skb->len - HCI_ACL_HDR_SIZE, hdev->block_len); | |
4113 | } | |
4114 | ||
6039aa73 | 4115 | static void __check_timeout(struct hci_dev *hdev, unsigned int cnt) |
73d80deb | 4116 | { |
1da177e4 LT |
4117 | if (!test_bit(HCI_RAW, &hdev->flags)) { |
4118 | /* ACL tx timeout must be longer than maximum | |
4119 | * link supervision timeout (40.9 seconds) */ | |
63d2bc1b | 4120 | if (!cnt && time_after(jiffies, hdev->acl_last_tx + |
5f246e89 | 4121 | HCI_ACL_TX_TIMEOUT)) |
bae1f5d9 | 4122 | hci_link_tx_to(hdev, ACL_LINK); |
1da177e4 | 4123 | } |
63d2bc1b | 4124 | } |
1da177e4 | 4125 | |
6039aa73 | 4126 | static void hci_sched_acl_pkt(struct hci_dev *hdev) |
63d2bc1b AE |
4127 | { |
4128 | unsigned int cnt = hdev->acl_cnt; | |
4129 | struct hci_chan *chan; | |
4130 | struct sk_buff *skb; | |
4131 | int quote; | |
4132 | ||
4133 | __check_timeout(hdev, cnt); | |
04837f64 | 4134 | |
73d80deb | 4135 | while (hdev->acl_cnt && |
a8c5fb1a | 4136 | (chan = hci_chan_sent(hdev, ACL_LINK, "e))) { |
ec1cce24 LAD |
4137 | u32 priority = (skb_peek(&chan->data_q))->priority; |
4138 | while (quote-- && (skb = skb_peek(&chan->data_q))) { | |
73d80deb | 4139 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, |
a8c5fb1a | 4140 | skb->len, skb->priority); |
73d80deb | 4141 | |
ec1cce24 LAD |
4142 | /* Stop if priority has changed */ |
4143 | if (skb->priority < priority) | |
4144 | break; | |
4145 | ||
4146 | skb = skb_dequeue(&chan->data_q); | |
4147 | ||
73d80deb | 4148 | hci_conn_enter_active_mode(chan->conn, |
04124681 | 4149 | bt_cb(skb)->force_active); |
04837f64 | 4150 | |
57d17d70 | 4151 | hci_send_frame(hdev, skb); |
1da177e4 LT |
4152 | hdev->acl_last_tx = jiffies; |
4153 | ||
4154 | hdev->acl_cnt--; | |
73d80deb LAD |
4155 | chan->sent++; |
4156 | chan->conn->sent++; | |
1da177e4 LT |
4157 | } |
4158 | } | |
02b20f0b LAD |
4159 | |
4160 | if (cnt != hdev->acl_cnt) | |
4161 | hci_prio_recalculate(hdev, ACL_LINK); | |
1da177e4 LT |
4162 | } |
4163 | ||
6039aa73 | 4164 | static void hci_sched_acl_blk(struct hci_dev *hdev) |
b71d385a | 4165 | { |
63d2bc1b | 4166 | unsigned int cnt = hdev->block_cnt; |
b71d385a AE |
4167 | struct hci_chan *chan; |
4168 | struct sk_buff *skb; | |
4169 | int quote; | |
bd1eb66b | 4170 | u8 type; |
b71d385a | 4171 | |
63d2bc1b | 4172 | __check_timeout(hdev, cnt); |
b71d385a | 4173 | |
bd1eb66b AE |
4174 | BT_DBG("%s", hdev->name); |
4175 | ||
4176 | if (hdev->dev_type == HCI_AMP) | |
4177 | type = AMP_LINK; | |
4178 | else | |
4179 | type = ACL_LINK; | |
4180 | ||
b71d385a | 4181 | while (hdev->block_cnt > 0 && |
bd1eb66b | 4182 | (chan = hci_chan_sent(hdev, type, "e))) { |
b71d385a AE |
4183 | u32 priority = (skb_peek(&chan->data_q))->priority; |
4184 | while (quote > 0 && (skb = skb_peek(&chan->data_q))) { | |
4185 | int blocks; | |
4186 | ||
4187 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, | |
a8c5fb1a | 4188 | skb->len, skb->priority); |
b71d385a AE |
4189 | |
4190 | /* Stop if priority has changed */ | |
4191 | if (skb->priority < priority) | |
4192 | break; | |
4193 | ||
4194 | skb = skb_dequeue(&chan->data_q); | |
4195 | ||
4196 | blocks = __get_blocks(hdev, skb); | |
4197 | if (blocks > hdev->block_cnt) | |
4198 | return; | |
4199 | ||
4200 | hci_conn_enter_active_mode(chan->conn, | |
a8c5fb1a | 4201 | bt_cb(skb)->force_active); |
b71d385a | 4202 | |
57d17d70 | 4203 | hci_send_frame(hdev, skb); |
b71d385a AE |
4204 | hdev->acl_last_tx = jiffies; |
4205 | ||
4206 | hdev->block_cnt -= blocks; | |
4207 | quote -= blocks; | |
4208 | ||
4209 | chan->sent += blocks; | |
4210 | chan->conn->sent += blocks; | |
4211 | } | |
4212 | } | |
4213 | ||
4214 | if (cnt != hdev->block_cnt) | |
bd1eb66b | 4215 | hci_prio_recalculate(hdev, type); |
b71d385a AE |
4216 | } |
4217 | ||
6039aa73 | 4218 | static void hci_sched_acl(struct hci_dev *hdev) |
b71d385a AE |
4219 | { |
4220 | BT_DBG("%s", hdev->name); | |
4221 | ||
bd1eb66b AE |
4222 | /* No ACL link over BR/EDR controller */ |
4223 | if (!hci_conn_num(hdev, ACL_LINK) && hdev->dev_type == HCI_BREDR) | |
4224 | return; | |
4225 | ||
4226 | /* No AMP link over AMP controller */ | |
4227 | if (!hci_conn_num(hdev, AMP_LINK) && hdev->dev_type == HCI_AMP) | |
b71d385a AE |
4228 | return; |
4229 | ||
4230 | switch (hdev->flow_ctl_mode) { | |
4231 | case HCI_FLOW_CTL_MODE_PACKET_BASED: | |
4232 | hci_sched_acl_pkt(hdev); | |
4233 | break; | |
4234 | ||
4235 | case HCI_FLOW_CTL_MODE_BLOCK_BASED: | |
4236 | hci_sched_acl_blk(hdev); | |
4237 | break; | |
4238 | } | |
4239 | } | |
4240 | ||
1da177e4 | 4241 | /* Schedule SCO */ |
6039aa73 | 4242 | static void hci_sched_sco(struct hci_dev *hdev) |
1da177e4 LT |
4243 | { |
4244 | struct hci_conn *conn; | |
4245 | struct sk_buff *skb; | |
4246 | int quote; | |
4247 | ||
4248 | BT_DBG("%s", hdev->name); | |
4249 | ||
52087a79 LAD |
4250 | if (!hci_conn_num(hdev, SCO_LINK)) |
4251 | return; | |
4252 | ||
1da177e4 LT |
4253 | while (hdev->sco_cnt && (conn = hci_low_sent(hdev, SCO_LINK, "e))) { |
4254 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { | |
4255 | BT_DBG("skb %p len %d", skb, skb->len); | |
57d17d70 | 4256 | hci_send_frame(hdev, skb); |
1da177e4 LT |
4257 | |
4258 | conn->sent++; | |
4259 | if (conn->sent == ~0) | |
4260 | conn->sent = 0; | |
4261 | } | |
4262 | } | |
4263 | } | |
4264 | ||
6039aa73 | 4265 | static void hci_sched_esco(struct hci_dev *hdev) |
b6a0dc82 MH |
4266 | { |
4267 | struct hci_conn *conn; | |
4268 | struct sk_buff *skb; | |
4269 | int quote; | |
4270 | ||
4271 | BT_DBG("%s", hdev->name); | |
4272 | ||
52087a79 LAD |
4273 | if (!hci_conn_num(hdev, ESCO_LINK)) |
4274 | return; | |
4275 | ||
8fc9ced3 GP |
4276 | while (hdev->sco_cnt && (conn = hci_low_sent(hdev, ESCO_LINK, |
4277 | "e))) { | |
b6a0dc82 MH |
4278 | while (quote-- && (skb = skb_dequeue(&conn->data_q))) { |
4279 | BT_DBG("skb %p len %d", skb, skb->len); | |
57d17d70 | 4280 | hci_send_frame(hdev, skb); |
b6a0dc82 MH |
4281 | |
4282 | conn->sent++; | |
4283 | if (conn->sent == ~0) | |
4284 | conn->sent = 0; | |
4285 | } | |
4286 | } | |
4287 | } | |
4288 | ||
6039aa73 | 4289 | static void hci_sched_le(struct hci_dev *hdev) |
6ed58ec5 | 4290 | { |
73d80deb | 4291 | struct hci_chan *chan; |
6ed58ec5 | 4292 | struct sk_buff *skb; |
02b20f0b | 4293 | int quote, cnt, tmp; |
6ed58ec5 VT |
4294 | |
4295 | BT_DBG("%s", hdev->name); | |
4296 | ||
52087a79 LAD |
4297 | if (!hci_conn_num(hdev, LE_LINK)) |
4298 | return; | |
4299 | ||
6ed58ec5 VT |
4300 | if (!test_bit(HCI_RAW, &hdev->flags)) { |
4301 | /* LE tx timeout must be longer than maximum | |
4302 | * link supervision timeout (40.9 seconds) */ | |
bae1f5d9 | 4303 | if (!hdev->le_cnt && hdev->le_pkts && |
a8c5fb1a | 4304 | time_after(jiffies, hdev->le_last_tx + HZ * 45)) |
bae1f5d9 | 4305 | hci_link_tx_to(hdev, LE_LINK); |
6ed58ec5 VT |
4306 | } |
4307 | ||
4308 | cnt = hdev->le_pkts ? hdev->le_cnt : hdev->acl_cnt; | |
02b20f0b | 4309 | tmp = cnt; |
73d80deb | 4310 | while (cnt && (chan = hci_chan_sent(hdev, LE_LINK, "e))) { |
ec1cce24 LAD |
4311 | u32 priority = (skb_peek(&chan->data_q))->priority; |
4312 | while (quote-- && (skb = skb_peek(&chan->data_q))) { | |
73d80deb | 4313 | BT_DBG("chan %p skb %p len %d priority %u", chan, skb, |
a8c5fb1a | 4314 | skb->len, skb->priority); |
6ed58ec5 | 4315 | |
ec1cce24 LAD |
4316 | /* Stop if priority has changed */ |
4317 | if (skb->priority < priority) | |
4318 | break; | |
4319 | ||
4320 | skb = skb_dequeue(&chan->data_q); | |
4321 | ||
57d17d70 | 4322 | hci_send_frame(hdev, skb); |
6ed58ec5 VT |
4323 | hdev->le_last_tx = jiffies; |
4324 | ||
4325 | cnt--; | |
73d80deb LAD |
4326 | chan->sent++; |
4327 | chan->conn->sent++; | |
6ed58ec5 VT |
4328 | } |
4329 | } | |
73d80deb | 4330 | |
6ed58ec5 VT |
4331 | if (hdev->le_pkts) |
4332 | hdev->le_cnt = cnt; | |
4333 | else | |
4334 | hdev->acl_cnt = cnt; | |
02b20f0b LAD |
4335 | |
4336 | if (cnt != tmp) | |
4337 | hci_prio_recalculate(hdev, LE_LINK); | |
6ed58ec5 VT |
4338 | } |
4339 | ||
3eff45ea | 4340 | static void hci_tx_work(struct work_struct *work) |
1da177e4 | 4341 | { |
3eff45ea | 4342 | struct hci_dev *hdev = container_of(work, struct hci_dev, tx_work); |
1da177e4 LT |
4343 | struct sk_buff *skb; |
4344 | ||
6ed58ec5 | 4345 | BT_DBG("%s acl %d sco %d le %d", hdev->name, hdev->acl_cnt, |
a8c5fb1a | 4346 | hdev->sco_cnt, hdev->le_cnt); |
1da177e4 | 4347 | |
52de599e MH |
4348 | if (!test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) { |
4349 | /* Schedule queues and send stuff to HCI driver */ | |
4350 | hci_sched_acl(hdev); | |
4351 | hci_sched_sco(hdev); | |
4352 | hci_sched_esco(hdev); | |
4353 | hci_sched_le(hdev); | |
4354 | } | |
6ed58ec5 | 4355 | |
1da177e4 LT |
4356 | /* Send next queued raw (unknown type) packet */ |
4357 | while ((skb = skb_dequeue(&hdev->raw_q))) | |
57d17d70 | 4358 | hci_send_frame(hdev, skb); |
1da177e4 LT |
4359 | } |
4360 | ||
25985edc | 4361 | /* ----- HCI RX task (incoming data processing) ----- */ |
1da177e4 LT |
4362 | |
4363 | /* ACL data packet */ | |
6039aa73 | 4364 | static void hci_acldata_packet(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 LT |
4365 | { |
4366 | struct hci_acl_hdr *hdr = (void *) skb->data; | |
4367 | struct hci_conn *conn; | |
4368 | __u16 handle, flags; | |
4369 | ||
4370 | skb_pull(skb, HCI_ACL_HDR_SIZE); | |
4371 | ||
4372 | handle = __le16_to_cpu(hdr->handle); | |
4373 | flags = hci_flags(handle); | |
4374 | handle = hci_handle(handle); | |
4375 | ||
f0e09510 | 4376 | BT_DBG("%s len %d handle 0x%4.4x flags 0x%4.4x", hdev->name, skb->len, |
a8c5fb1a | 4377 | handle, flags); |
1da177e4 LT |
4378 | |
4379 | hdev->stat.acl_rx++; | |
4380 | ||
4381 | hci_dev_lock(hdev); | |
4382 | conn = hci_conn_hash_lookup_handle(hdev, handle); | |
4383 | hci_dev_unlock(hdev); | |
8e87d142 | 4384 | |
1da177e4 | 4385 | if (conn) { |
65983fc7 | 4386 | hci_conn_enter_active_mode(conn, BT_POWER_FORCE_ACTIVE_OFF); |
04837f64 | 4387 | |
1da177e4 | 4388 | /* Send to upper protocol */ |
686ebf28 UF |
4389 | l2cap_recv_acldata(conn, skb, flags); |
4390 | return; | |
1da177e4 | 4391 | } else { |
8e87d142 | 4392 | BT_ERR("%s ACL packet for unknown connection handle %d", |
a8c5fb1a | 4393 | hdev->name, handle); |
1da177e4 LT |
4394 | } |
4395 | ||
4396 | kfree_skb(skb); | |
4397 | } | |
4398 | ||
4399 | /* SCO data packet */ | |
6039aa73 | 4400 | static void hci_scodata_packet(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 LT |
4401 | { |
4402 | struct hci_sco_hdr *hdr = (void *) skb->data; | |
4403 | struct hci_conn *conn; | |
4404 | __u16 handle; | |
4405 | ||
4406 | skb_pull(skb, HCI_SCO_HDR_SIZE); | |
4407 | ||
4408 | handle = __le16_to_cpu(hdr->handle); | |
4409 | ||
f0e09510 | 4410 | BT_DBG("%s len %d handle 0x%4.4x", hdev->name, skb->len, handle); |
1da177e4 LT |
4411 | |
4412 | hdev->stat.sco_rx++; | |
4413 | ||
4414 | hci_dev_lock(hdev); | |
4415 | conn = hci_conn_hash_lookup_handle(hdev, handle); | |
4416 | hci_dev_unlock(hdev); | |
4417 | ||
4418 | if (conn) { | |
1da177e4 | 4419 | /* Send to upper protocol */ |
686ebf28 UF |
4420 | sco_recv_scodata(conn, skb); |
4421 | return; | |
1da177e4 | 4422 | } else { |
8e87d142 | 4423 | BT_ERR("%s SCO packet for unknown connection handle %d", |
a8c5fb1a | 4424 | hdev->name, handle); |
1da177e4 LT |
4425 | } |
4426 | ||
4427 | kfree_skb(skb); | |
4428 | } | |
4429 | ||
9238f36a JH |
4430 | static bool hci_req_is_complete(struct hci_dev *hdev) |
4431 | { | |
4432 | struct sk_buff *skb; | |
4433 | ||
4434 | skb = skb_peek(&hdev->cmd_q); | |
4435 | if (!skb) | |
4436 | return true; | |
4437 | ||
4438 | return bt_cb(skb)->req.start; | |
4439 | } | |
4440 | ||
42c6b129 JH |
4441 | static void hci_resend_last(struct hci_dev *hdev) |
4442 | { | |
4443 | struct hci_command_hdr *sent; | |
4444 | struct sk_buff *skb; | |
4445 | u16 opcode; | |
4446 | ||
4447 | if (!hdev->sent_cmd) | |
4448 | return; | |
4449 | ||
4450 | sent = (void *) hdev->sent_cmd->data; | |
4451 | opcode = __le16_to_cpu(sent->opcode); | |
4452 | if (opcode == HCI_OP_RESET) | |
4453 | return; | |
4454 | ||
4455 | skb = skb_clone(hdev->sent_cmd, GFP_KERNEL); | |
4456 | if (!skb) | |
4457 | return; | |
4458 | ||
4459 | skb_queue_head(&hdev->cmd_q, skb); | |
4460 | queue_work(hdev->workqueue, &hdev->cmd_work); | |
4461 | } | |
4462 | ||
9238f36a JH |
4463 | void hci_req_cmd_complete(struct hci_dev *hdev, u16 opcode, u8 status) |
4464 | { | |
4465 | hci_req_complete_t req_complete = NULL; | |
4466 | struct sk_buff *skb; | |
4467 | unsigned long flags; | |
4468 | ||
4469 | BT_DBG("opcode 0x%04x status 0x%02x", opcode, status); | |
4470 | ||
42c6b129 JH |
4471 | /* If the completed command doesn't match the last one that was |
4472 | * sent we need to do special handling of it. | |
9238f36a | 4473 | */ |
42c6b129 JH |
4474 | if (!hci_sent_cmd_data(hdev, opcode)) { |
4475 | /* Some CSR based controllers generate a spontaneous | |
4476 | * reset complete event during init and any pending | |
4477 | * command will never be completed. In such a case we | |
4478 | * need to resend whatever was the last sent | |
4479 | * command. | |
4480 | */ | |
4481 | if (test_bit(HCI_INIT, &hdev->flags) && opcode == HCI_OP_RESET) | |
4482 | hci_resend_last(hdev); | |
4483 | ||
9238f36a | 4484 | return; |
42c6b129 | 4485 | } |
9238f36a JH |
4486 | |
4487 | /* If the command succeeded and there's still more commands in | |
4488 | * this request the request is not yet complete. | |
4489 | */ | |
4490 | if (!status && !hci_req_is_complete(hdev)) | |
4491 | return; | |
4492 | ||
4493 | /* If this was the last command in a request the complete | |
4494 | * callback would be found in hdev->sent_cmd instead of the | |
4495 | * command queue (hdev->cmd_q). | |
4496 | */ | |
4497 | if (hdev->sent_cmd) { | |
4498 | req_complete = bt_cb(hdev->sent_cmd)->req.complete; | |
53e21fbc JH |
4499 | |
4500 | if (req_complete) { | |
4501 | /* We must set the complete callback to NULL to | |
4502 | * avoid calling the callback more than once if | |
4503 | * this function gets called again. | |
4504 | */ | |
4505 | bt_cb(hdev->sent_cmd)->req.complete = NULL; | |
4506 | ||
9238f36a | 4507 | goto call_complete; |
53e21fbc | 4508 | } |
9238f36a JH |
4509 | } |
4510 | ||
4511 | /* Remove all pending commands belonging to this request */ | |
4512 | spin_lock_irqsave(&hdev->cmd_q.lock, flags); | |
4513 | while ((skb = __skb_dequeue(&hdev->cmd_q))) { | |
4514 | if (bt_cb(skb)->req.start) { | |
4515 | __skb_queue_head(&hdev->cmd_q, skb); | |
4516 | break; | |
4517 | } | |
4518 | ||
4519 | req_complete = bt_cb(skb)->req.complete; | |
4520 | kfree_skb(skb); | |
4521 | } | |
4522 | spin_unlock_irqrestore(&hdev->cmd_q.lock, flags); | |
4523 | ||
4524 | call_complete: | |
4525 | if (req_complete) | |
4526 | req_complete(hdev, status); | |
4527 | } | |
4528 | ||
b78752cc | 4529 | static void hci_rx_work(struct work_struct *work) |
1da177e4 | 4530 | { |
b78752cc | 4531 | struct hci_dev *hdev = container_of(work, struct hci_dev, rx_work); |
1da177e4 LT |
4532 | struct sk_buff *skb; |
4533 | ||
4534 | BT_DBG("%s", hdev->name); | |
4535 | ||
1da177e4 | 4536 | while ((skb = skb_dequeue(&hdev->rx_q))) { |
cd82e61c MH |
4537 | /* Send copy to monitor */ |
4538 | hci_send_to_monitor(hdev, skb); | |
4539 | ||
1da177e4 LT |
4540 | if (atomic_read(&hdev->promisc)) { |
4541 | /* Send copy to the sockets */ | |
470fe1b5 | 4542 | hci_send_to_sock(hdev, skb); |
1da177e4 LT |
4543 | } |
4544 | ||
0736cfa8 MH |
4545 | if (test_bit(HCI_RAW, &hdev->flags) || |
4546 | test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) { | |
1da177e4 LT |
4547 | kfree_skb(skb); |
4548 | continue; | |
4549 | } | |
4550 | ||
4551 | if (test_bit(HCI_INIT, &hdev->flags)) { | |
4552 | /* Don't process data packets in this states. */ | |
0d48d939 | 4553 | switch (bt_cb(skb)->pkt_type) { |
1da177e4 LT |
4554 | case HCI_ACLDATA_PKT: |
4555 | case HCI_SCODATA_PKT: | |
4556 | kfree_skb(skb); | |
4557 | continue; | |
3ff50b79 | 4558 | } |
1da177e4 LT |
4559 | } |
4560 | ||
4561 | /* Process frame */ | |
0d48d939 | 4562 | switch (bt_cb(skb)->pkt_type) { |
1da177e4 | 4563 | case HCI_EVENT_PKT: |
b78752cc | 4564 | BT_DBG("%s Event packet", hdev->name); |
1da177e4 LT |
4565 | hci_event_packet(hdev, skb); |
4566 | break; | |
4567 | ||
4568 | case HCI_ACLDATA_PKT: | |
4569 | BT_DBG("%s ACL data packet", hdev->name); | |
4570 | hci_acldata_packet(hdev, skb); | |
4571 | break; | |
4572 | ||
4573 | case HCI_SCODATA_PKT: | |
4574 | BT_DBG("%s SCO data packet", hdev->name); | |
4575 | hci_scodata_packet(hdev, skb); | |
4576 | break; | |
4577 | ||
4578 | default: | |
4579 | kfree_skb(skb); | |
4580 | break; | |
4581 | } | |
4582 | } | |
1da177e4 LT |
4583 | } |
4584 | ||
c347b765 | 4585 | static void hci_cmd_work(struct work_struct *work) |
1da177e4 | 4586 | { |
c347b765 | 4587 | struct hci_dev *hdev = container_of(work, struct hci_dev, cmd_work); |
1da177e4 LT |
4588 | struct sk_buff *skb; |
4589 | ||
2104786b AE |
4590 | BT_DBG("%s cmd_cnt %d cmd queued %d", hdev->name, |
4591 | atomic_read(&hdev->cmd_cnt), skb_queue_len(&hdev->cmd_q)); | |
1da177e4 | 4592 | |
1da177e4 | 4593 | /* Send queued commands */ |
5a08ecce AE |
4594 | if (atomic_read(&hdev->cmd_cnt)) { |
4595 | skb = skb_dequeue(&hdev->cmd_q); | |
4596 | if (!skb) | |
4597 | return; | |
4598 | ||
7585b97a | 4599 | kfree_skb(hdev->sent_cmd); |
1da177e4 | 4600 | |
a675d7f1 | 4601 | hdev->sent_cmd = skb_clone(skb, GFP_KERNEL); |
70f23020 | 4602 | if (hdev->sent_cmd) { |
1da177e4 | 4603 | atomic_dec(&hdev->cmd_cnt); |
57d17d70 | 4604 | hci_send_frame(hdev, skb); |
7bdb8a5c SJ |
4605 | if (test_bit(HCI_RESET, &hdev->flags)) |
4606 | del_timer(&hdev->cmd_timer); | |
4607 | else | |
4608 | mod_timer(&hdev->cmd_timer, | |
5f246e89 | 4609 | jiffies + HCI_CMD_TIMEOUT); |
1da177e4 LT |
4610 | } else { |
4611 | skb_queue_head(&hdev->cmd_q, skb); | |
c347b765 | 4612 | queue_work(hdev->workqueue, &hdev->cmd_work); |
1da177e4 LT |
4613 | } |
4614 | } | |
4615 | } |